Friday, May 30, 2014

It is currently at 100+ simulations instead of 65+

Thanks to swee teck  for the pleasant email for distinguished star service award 2014.

Leadership is key. Thanks PS for the suggestions to share about this event.

Tuesday, May 27, 2014

EJSS Circular Motion Ferris Wheel Model

EJSS Circular Motion Ferris Wheel Model
http://weelookang.blogspot.sg/2014/05/ejss-circular-motion-ferris-wheel-model.html
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_ferrisWheelJSwee/ferrisWheelJSwee_Simulation.xhtml
source: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_src_ferrisWheelJSwee.zip
authors: Mario Belloni, this version by lookang
author of EJS 5: Paco.

EJSS Circular Motion Ferris Wheel Model

this model uses the constant angular velocity to evolve the simulation

Ordinary Differential Equation

$ \frac{d \theta}{dt} = \omega $ 


Position of Ferris Wheel Mass

the coordinates of the mass are spaced out by using

$ x[i] = R sin(1+i) d \theta $

$ y[i] = - R cos(1+i) d \theta $

$ rot[i] = (1+i) d \theta $

where

$ d \theta  = \frac{2 \pi}{N_{1}} $

because there are $ N_{1} =12 carriages 


Newtonian Forces

the following equations are used to represent the forces such as

$ Weight = mg $


Where $ m = 8 kg $

By using the Newton's second law on the carriage in circular motion resolving to a general angle of $ \theta $ where  $ \theta $ is angle made with the vertically downward plumb-line.


 $ F = mg $

typical resolving in the parallel and perpendicular to circular path,

$ N - mg= m \frac{v^2}{R} $

$ mgsin \theta = m \frac{d^{2} \theta}{ d t^{2}}    $

where $ \frac{d^{2} \theta}{ d t^{2}} = 0 $ constant angular velocity motion

resolving into x and y direction

 $ N_{x}       = m \frac{v^2}{R}sin \theta $

$ N_{y} - mg = m \frac{v^2}{R}cos \theta $

The resultant is also resolve as

 $ Resultant_{x} = - m \frac{v^2}{R}sin \theta $

$ Resultant_{y} = - m \frac{v^2}{R}cos \theta $

$ Resultant =  \sqrt{Resultant_{x}^{2}+Resultant_{y}^{2}} $

Conversion of radian to degree


The simple relationship is used to convert radian (used by computer) to degree ( used by human and thus the sliders and input fields)

$ \theta_{deg} = \frac{\theta 180 }{\pi}$

General Description


This program simulates the effect of being on a Ferris Wheel. The simulation shows a wheel that can be varied in radius from 40 m (Ferris' original wheels) to 100 m, or about 10 meters larger than the current world record. In addition, the rotational speed of the wheel can be varied from -20 m/s to 20 m/s. By selecting the check-box, the free-body diagram can be shown.

This simulation is part of a collection of simulations related to amusement park physics. Additional simulations can be found on the OSP ComPADRE site.

Controls
Radius of the wheel (40 - 100 meters).
Speed: sets the speed of the Ferris wheel (-20 to 20 m/s).

Mario Belloni (mabelloni@davidson.edu) and now weelookang@gmail.com


Changes made by lookang include


  1. added velocity array to be display via check-box
  2. added theta to show
  3. added title
  4. made free body diagram to show weight and contact force while resultant force is a dotted line to illustrate the difference, actually FBD only has weight and contact force
  5. added values to aid numerical calculations
  6. made R = the outside hub to aid association of radius of circular motion made by carriage and man and woman
  7. made time step to allow exactly 0 , 90 , 180 , 270, 360 degrees, previously was dt =0.02  




Monday, May 26, 2014

PS21 Star Service Award PSSSA 2014 MOE

thanks to MOE for broadcasting this in the message of the day system. #psw2014
congratulations to all!

PS21 Star Service Award PSSSA 2014 MOE
thanks to MOE for broadcasting this in the message of the day system
PS21 Star Service Award PSSSA 2014 MOE
(Left to Right) Arthur Poh (photo from), Lawrence Wee, Vikneswaran and Lai Fung.
Thanks to PS Education for joining the event!

Sunday, May 25, 2014

Excellence in Public Service Awards 2014.pdf

Excellence in Public Service Awards 2014.pdf by National Library Board, ministry of Communications and Information, Public Service division. #psw2014 #edsg


Aim:

The Excellence in Public Service Awards Ceremony recognises public officers for outstanding service and public organisations’ achievements in Organisational Excellence (OE) and in implementing Best Practices. It also recognises members of the public who have been particularly helpful and understanding, and who have made significant contributions as customers.
A publication given to all award winners of PS21 Star Service award 2014
“I would like to make the world a better place for everyone, and do my humble part as a concerned citizen of the world by contributing to open educational resources, and creating engaging and interactive computer models-simulations that support active learning for improving education all over the world. Thus my motivation is to serve students, teachers and the public with the well-designed and customised simulations resources for the world, while being rooted in Singapore.” - WEE LOO KANG LAWRENCE Senior Specialist, Educational Technology Division Ministry of Education


A publication given to all award winners of PS21 Star Service award 2014.

selfie with PS Education

made this blog since i have also selfie with deputy prime minister teo chee hean and head of public service peter ong :)

selfie with PS Education, Chan Lai Fung.
thanks to Star Service Award i managed to get PS to do this selfie.

Saturday, May 24, 2014

Video of public service week star award 2014

Thanks to public service Division for creating this awesome video to spread the message of good will and service to fellow citizens for the world. #psw2014


given out to all award winners, created by Public Service Division Singapore. #psw2014
a message from Public Service, to celebrate each and every public officers contribution to a better Singapore.
Enjoy!


video clip 3.33 to 3.43 min
video clip 3.33 to 3.43 min
video clip 3.33 to 3.43 min

Distinguished Service Excellence in public service awards PS21 2014

Distinguished Service Excellence in public service awards PS21 2014.
#psw2014

http://weelookang.blogspot.sg/2014/05/distinguished-service-excellence-in.html
Distinguished Service Excellence in public service awards PS21 2014. Only 10 Distinguished awards given out this year from 133  from all public services Singapore. 


Distinguished Service Excellence in public service awards PS21 2014


Distinguished Service Excellence in public service awards PS21 2014

Distinguished Service Excellence in public service awards PS21 2014


3 Distinguished Service Excellence from Ministry of Education. photo taken from https://www.facebook.com/photo.php?fbid=10152362693259724&set=a.10152362689784724.1073741877.522239723&type=1&theater&notif_t=like_tagged
seflie with permanent secretary education, chan lai fung

thanks to arthur for taking the photo

thanks to arthur for taking the photo


Over a hundred Civil Service Award for Excellence

With the Public Service Week, 133 outstanding performance this year will be in recognition of the civil service, of which 10 will be awarded the "PS21 STAR SERVICE AWARD". President Tan will also entertain the afternoon of 600 civil servants at the presidential palace, including this year was awarded the "PS21 DISTINGUISHED STAR SERVICE AWARD" from 133 civil servants.
source: http://sg.xinhuanet.com/2014-05/20/c_126520749.htm


Acknowledgement:

Many thanks to these 3 judges who judge me as worthy of the distinguished Award 2014.

PS21 DISTINGUISHED STAR SERVICE AND PS21 STAR CUSTOMER AWARD (JUDGES)


  1. Mr Harnek Singh Vice-President/Director, Business Excellence, Singapore Technologies Engineering Ltd
  2. Mrs Helen Lim-Yang, Principal Consultant ,Rohei Corporation Pte Ltd
  3. Mr Yap Kim Wah, Deputy Chairman & CEO, Hyflux Caprica Pte Ltd

Friday, May 23, 2014

Service Excellence in public service awards 2014

Photo of the events.
thanks to peter ong for giving out the award.
Interesting that we just spoke at the istana yesterday.

http://weelookang.blogspot.sg/2014/05/excellence-in-public-service-awards-2014.html
Service Excellence in public service awards 2014


So coincidental :)
Add caption
pg 7 of PS21 Star Service Award
OPENING ADDRESS BY DEPUTY PRIME MINISTER TEO CHEE HEAN, MINISTER IN CHARGE OF THE CIVIL SERVICE AT THE EXCELLENCE IN PUBLIC SERVICE AWARDS CEREMONY
FRIDAY, 23 MAY 2014, 4.10 PM, FLOWER FIELD HALL, GARDENS BY THE BAY
“Working Together to Serve Singaporeans Better”

Speech taken from http://www.psd.gov.sg/content/psd/en/media/speech_23May2014.html


OPENING ADDRESS BY DEPUTY PRIME MINISTER TEO CHEE HEAN, MINISTER IN CHARGE OF THE CIVIL SERVICE AT THE EXCELLENCE IN PUBLIC SERVICE AWARDS CEREMONY

FRIDAY, 23 MAY 2014, 4.10 PM, FLOWER FIELD HALL, GARDENS BY THE BAY

“Working Together to Serve Singaporeans Better”



Head of Civil Service,
Distinguished Guests,
Colleagues,
Ladies and Gentlemen,

Good Afternoon to all of you.

2. I am very happy to join you at this year’s Excellence in Public Service Awards Ceremony at this beautiful location here at Gardens by the Bay.

3. Each year, we recognise public agencies and public officers who have done well to improve the lives of Singaporeans. We also recognise fellow Singaporeans who have partnered public agencies in service delivery.

Public Service – Working Together to Serve Singaporeans Better

4. The Public Service’s mission is to develop policies and implement programmes that make Singapore better for Singaporeans. Our public service pioneers have brought Singapore from Third World to First: Growing the economy and creating jobs. Providing education, healthcare, and housing. Developing infrastructure such as roads and drains. Making Singapore clean and green and beautiful. Building up our defence and security capabilities while strengthening foreign relations.

5. They have provided a strong foundation for all of us to make Singapore even better as Singapore enters a new phase of development. We must continue to build on this foundation as the needs and interests of Singaporeans have become more diverse – due in part to better education, changing demographics, and broader and higher aspirations. Many Singaporeans also want to contribute their ideas and time to help make Singapore better – including how to improve public policy and services. How can the Public Service evolve to draw on their energy and ideas, to help Singaporeans achieve their aspirations, to build a better Singapore for all of us?

6. The Public Service must place renewed emphasis on “Working Together to Serve Singaporeans Better” in three areas. One, work more closely with one another, across agencies, to effectively resolve issues that Singaporeans face. Two, seek to better understand and respond to the needs of Singaporeans. Three, tap on the ideas and energy of Singaporeans, and create space for them to participate in the development of policies and implementation of programmes.

7. First, strengthening inter-agency collaboration. The issues and challenges that Singapore and Singaporeans face often cut across multiple agencies. To resolve such issues effectively, agencies have to see beyond their own mandates, and work closely together with one another. We must continue to nurture a strong One Public Service mindset among our public officers, and encourage stronger inter-agency collaboration, in order to deliver better outcomes.

8. The restructuring of some of our agencies to bring all pre-school issues, previously handled by different agencies, under the new Early Childhood Development Agency is one such example. This will help us provide stronger support to parents to bring out the potential in all Singaporeans from an early age. This is one of our priorities. We are also setting up Social Service Offices to provide more coordinated and integrated care to needy Singaporeans. These new agencies have already started to deliver better outcomes.

9. Government services have also been restructured to deal with day-to-day issues. In March 2012, the Agri-Food and Veterinary Authority set up the Animal Response Centre as the single point of contact bringing together multiple agencies to resolve animal-related issues speedily and effectively. For stepping up to deal with these issues, AVA will be receiving the Best Practice Award in Inter-agency Collaboration today.

10. Second, being more responsive to changing needs. The needs of Singaporeans have grown more diverse, and are changing more rapidly. Public agencies and officers must understand the concerns and interests of Singaporeans and adjust policies and programmes to meet these changing needs.

11. Some rules and processes may be outdated or no longer relevant. Let me give one recent example. For security reasons, mobile phones with cameras had not been allowed in MINDEF and SAF camps. However, such a rule was increasingly inconvenient and impractical for our NSmen. Mobile phones with cameras had become the norm rather than an exclusive feature only for some; phones without cameras were becoming a rarity, almost a museum piece. MINDEF therefore took in these concerns from our National Servicemen and allowed mobile phones with cameras, but in a tiered approach, in less sensitive areas. The majority of NSFs and NSmen can now continue using their mobile phones while in camp. This helps them to balance their NS duties with their work and family commitments. At the same time, MINDEF too balanced its security needs with the needs of our National Servicemen.

12. Third, encouraging participation. (does sharing this video count as participation? :) )With a better educated and more diverse population, we are seeing more Singaporeans who are willing and able to contribute their ideas, time and services to improving public service delivery. Public agencies can benefit by finding new ways to engage and involve our citizens to jointly develop and implement solutions to issues that matter to them.

13. Recognising the importance of involving stakeholders early, the URA put out a Draft Master Plan 2013 to solicit views from fellow Singaporeans and other stakeholders, so that their views could be incorporated into the eventual Master Plan.

14. URA found that the community and stakeholders appreciated being kept informed of future plans early. URA benefited from the good ideas from different stakeholders, and Singaporeans were better able to appreciate the diverse needs of different interest groups, and the considerations behind the Draft Master Plan 2013.

15. We are also happy to see more Singaporeans coming forward to contribute their time and effort. Five Singaporeans, Mr Abdul Hamid, Mr Anthony Au, Mr Loh Wan Heng, Mdm Saniah and Mdm Yeo Chwee Fong will be receiving the PS21 Star Customer Award today, for their active contributions to public service. Thank you for working together with our agencies to make life better for all of us. I encourage public agencies to consider new areas and find new ways to tap on the ideas and energy of fellow Singaporeans, to help us develop better policies and programmes, and to help us have a sense of ownership to build our Singapore together.

video


Serving with Heart

16. We have many public officers who are passionate about improving the lives of fellow Singaporeans. 133 public officers will receive the PS21 Star Service Awards this year.

17. Mr Lu Juncai from the People’s Association is one of them. His job is to promote and market Community Centre (CC) activities, courses and events, and encourage residents to sign up for CC membership. However, he has not let his job scope limit his service to the community.

18. One day, Juncai received a call requesting for financial assistance from a resident. Instead of passing on the request to his colleague whose job was responsible for financial assistance, he decided to meet the caller over lunch to understand his situation better. The caller was a 54 year old man who was single, suffers from kidney failure and was unable to work. With a listening ear and a better understanding of the situation, Juncai facilitated his colleagues’ and the grassroots leaders’ efforts to provide financial assistance for the resident. He sought to understand the factors behind the immediate issue, and took action beyond the scope of his duties. This brought about a better inter-agency and community response to provide the necessary assistance, to extend help with a heart to a resident in need. Thank you Juncai for doing so.

Conclusion

19. Many of our officers tell me that the work you do is deeply satisfying and meaningful, and you find fulfilment from making a difference to Singapore and our fellow Singaporeans – and that is why you are in the Public Service.

20. Besides the 18 agencies and 133 officers receiving awards this year, many front-line agencies and many public officers have done good work in the last two years to improve service delivery and policy responsiveness. I hope our award winners will inspire all of us to do even better.

video2


21. Today, we also come together to re-affirm the Public Service values of Integrity, Service and Excellence. To remind ourselves that we must work together as One Public Service, united by these values. To commit ourselves anew as a Public Service that works together with our fellow Singaporeans to build a better future for ourselves and our children. To dedicate ourselves to Working Together to Serve Singaporeans Better.

22. Thank you for your good work and dedication.

collection of physics resources free for anyone to use!

collection of physics resources free for anyone to use!
enjoy :)
https://docs.google.com/spreadsheets/d/1AysEjBj-d7yZSn8-_XEYa_FPHQxEk1bdf6hw-ekMEx4/edit#gid=0


TfL ProjectSubjectLevelTopicLearning OutcomeResource TypeDescriptionSource (Link)Operating SystemOperating SystemOperating System
NRF2011-EDU001-EL001Physics
JC / CI
Dynamicshttp://www.seab.gov.sg/aLevel/2014Syllabus/9646_2014.pdf
(g) state the principle of conservation of momentum.

(h) apply the principle of conservation of momentum to solve simple problems including elastic
and inelastic interactions between two bodies in one dimension. (Knowledge of the concept of
coefficient of restitution is not required.)

(i) recognise that, for a perfectly elastic collision between two bodies, the relative speed of
approach is equal to the relative speed of separation.
Simulation / Manipulative
Dynamics: 1 Direction Collision Force Modelhttps://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_Momentum1DForceModel09.jar
author: lookang, paco and engrg1
worksheets by
(lead) AJC: https://www.dropbox.com/s/5obo5awn3w3zrgr/CollsionCartsAJC.zip
(lead) RVHS: https://www.dropbox.com/s/8bq51hqa1jsjcvn/CollsionCartsRVHS.zip
IJC https://www.dropbox.com/s/ztwc4pkvtc7ho50/CollisoncartsIJC.zip
SRJC: https://www.dropbox.com/s/m4yrerc97fgesn2/CollisioncartsSRJC.zip
YJC: https://www.dropbox.com/s/uguy3ewndj0pqxr/CollisionCartsYJC2013.zip
Windows PC
Mac OS
Linux
NRF2011-EDU001-EL001Physics
JC / CI
Gravitational Field
(i) analyse circular orbits in inverse square law fields by relating the gravitational force to the
centripetal acceleration it causes.
Simulation / Manipulative
Gravitational Field: Kepler's 3rd Law (T^2/r^3=constant)https://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_KeplerSystem3rdLaw09.jar
author: timberlake and lookang
worksheets by (lead) YJC: same link of four simulations https://www.dropbox.com/s/53vztw6meupn4r5/GravitationYJC.zip
https://www.dropbox.com/s/7ng3brk1h48f7tf/GravitationYJC2013.zip
scaling IJC: https://dl.dropboxusercontent.com/u/44365627/eduLabJava2012-2013/Gravity/GravitationIJC2013.zip
Windows PC
Mac OS
Linux
NRF2011-EDU001-EL001Physics
JC / CI
Gravitational Field (a) show an understanding of the concept of a gravitational field as an example of field of force
and define gravitational field strength as force per unit mass.

(b) recall and use Newton's law of gravitation in the form F = 2
1 2
r
Gm m .

(c) derive, from Newton's law of gravitation and the definition of gravitational field strength, the
equation 2 r
GM
g = for the gravitational field strength of a point mass.

(d) recall and apply the equation 2 r
GM
g = for the gravitational field strength of a point mass to
new situations or to solve related problems
Simulation / Manipulative
Gravitational Field: Gravitational Potential 1 Dimensionhttps://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_GFieldMass.jar
Windows PC
Mac OS
Linux
NRF2011-EDU001-EL001Physics
JC / CI
Gravitational Field (f) define potential at a point as the work done in bringing unit mass from infinity to the point.

(g) solve problems using the equation
r
GM φ = − for the potential in the field of a point mass.
Simulation / Manipulative
Gravitational Field: Gravitational potential 1 Dimension Earth & Moon Real Datahttps://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_EarthMoon.jar
Windows PC
Mac OS
Linux
NRF2011-EDU001-EL001Physics
JC / CI
Gravitational Field (j) show an understanding of geostationary orbits and their application.
Simulation / Manipulative
Gravitational Field: Geostationary Orbits of Satellite & Earthhttps://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_EarthAndSatelite.jar
Windows PC
Mac OS
Linux
NRF2011-EDU001-EL001Physics
JC / CI
Wave Motion(a) show an understanding and use the terms displacement, amplitude, phase difference, period,
frequency, wavelength and speed.
Simulation / Manipulative
Waves: Progressive waves & Superpositionhttps://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_WaveFunctionPlotterSuperpositionwee01.jar
author: wolfgang and lookang
worksheets by (lead) SRJC:https://www.dropbox.com/s/uslrrrdkyq2puqe/WavesSRJC.zip
Windows PC
Mac OS
Linux
NRF2011-EDU001-EL001Physics
JC / CI
Superposition(e) show an understanding of experiments which demonstrate diffraction including the diffraction
of water waves in a ripple tank with both a wide gap and a narrow gap.

(f) show an understanding of the terms interference and coherence.

(g) show an understanding of experiments which demonstrate two-source interference using
water, light and microwaves.

(h) show an understanding of the conditions required if two-source interference fringes are to be
observed.
Simulation / Manipulative
Waves: Interferencehttps://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_Ripple_Tank_Interferencewee13.jar
authors: Wee, Duffy, Aguirregabiria, Hwang & Lee,
worksheets by (lead) IJC: https://www.dropbox.com/s/ssfismpu1683l3k/RippleTankIJC.zip
IJC: https://www.dropbox.com/s/dyvzrhuhzecxx7c/RippleTankIJC2013.docx
RVHS: https://www.dropbox.com/s/pnbi0k6ww1zcmv8/RippleTankRVHS.zip
YJC: https://www.dropbox.com/s/khlnwerjoienknh/RippleTankYJC.zip
Windows PC
Mac OS
Linux
NRF2011-EDU001-EL001Physics
JC / CI
Electromagnetic Induction (d) infer from appropriate experiments on electromagnetic induction:
i. that a changing magnetic flux can induce an e.m.f. in a circuit,
ii. that the direction of the induced e.m.f. opposes the change producing it,
iii. the factors affecting the magnitude of the induced e.m.f.

(e) recall and solve problems using Faraday's law of electromagnetic induction and Lenz's law.

(f) explain simple applications of electromagnetic induction.
Simulation / Manipulative
Electricity and Magnetism: Electromagnetic Inductionhttps://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_FallingMagnet13_4.3.0.jar
https://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_FallingMagnet11_4.3.0.jar

author: paco, lookang,and engrg1
worksheets by (lead) AJC: https://www.dropbox.com/s/a38tmxslprzmtkw/FallingMagnetAJC.zip
RVHS: https://www.dropbox.com/s/siievhgeyihyxn8/FallingMagnetRVHS.zipRVHS: https://www.dropbox.com/s/ljnxqabi2gdgprd/FallingMagnetRVHS2013.zip
SRJC: https://www.dropbox.com/s/0t2upmmlu0ltfoh/FallingMagnetSRJC.zipSRJC: https://www.dropbox.com/s/kbr5r06ba1i0wlv/FallingMagnetSRJC2013.zip
Windows PC
Mac OS
Linux
NRF2013-EDU001-EL017Physics
Sec
Kinematicshttp://www.seab.gov.sg/oLevel/2013Syllabus/5057_2013.pdf
(a) state what is meant by speed and velocity
(b) calculate average speed using distance travelled / time taken
(c) state what is meant by uniform acceleration and calculate the value of an acceleration using

Simulation / Manipulative
Tracker Ball Toss Up by Douglas Brown and model by lookang $v_{y}$ = 3.94 and $f_{y}$ = 2*-4.837, where numbers are determined by analysis of trend fitting curves coefficientsauthor of video Douglas Brown, model lookang
https://dl.dropboxusercontent.com/u/44365627/TrackerDigitalLibrarySG/bosstossup.trz
author of worksheet: ETD, CPDD, Evergreen Sec
https://www.dropbox.com/s/pdoudzku1f2kvft/physics_pt_samanthayom_26_312offsetorigindone.trz
Windows PC
Mac OS
Linux
NRF2013-EDU001-EL017Physics
Sec
Kinematics(e) plot and interpret a distance-time graph and a speed-time graph
Simulation / Manipulative
Tracker Ball Drop model by lookang author of video and model lookang
https://www.dropbox.com/s/s35is0rg3cn917k/ballbouncelookang01_x264wee.trz
author of worksheet: ETD, CPDD, Evergreen Sec, NJC
https://www.dropbox.com/s/xi0vxk7u9ot4xxo/Free%20fall%20-%20investigate%20using%20tracker-student%202.docx
ss
Windows PC
Mac OS
Linux
NRF2013-EDU001-EL017Physics
Sec
Dynamics(b) describe the ways in which a force may change the motion of a body
Simulation / Manipulative
video by valary lim, kinematics model by lookang
1. explain why the model A is written as x = if(t<0.333,0.60*t,if(t>0.333,0.1998+0.15*(t-0.333),0))
2. explain why model B is written as x = if(t<0.333,0.205,0.205+0.44*(t-0.333+0.0333))
https://www.dropbox.com/s/4ypouk5hgc69hww/304-307valarylimmarble_analysisandmodel.trz
https://www.dropbox.com/s/4ypouk5hgc69hww/304-307valarylimmarble_analysisandmodel.trz
Windows PC
Mac OS
Linux
NRF2013-EDU001-EL017Physics
Sec
Kinematics(i) state that the acceleration of free fall for a body near to the Earth is constant and is
approximately 10 m/s2
Simulation / Manipulative
http://weelookang.blogspot.sg/2014/04/tracker-natashataiqianhui-student-video.html
bouncing ball video
https://www.dropbox.com/s/vz3dbyvlvpe1m7s/natashataiqianhui_304_18_physicstrackerfamodel.trz
author of video: natashataiqianhu, author of model: lookang (only for the first 3 bounces is added)
https://www.dropbox.com/s/vz3dbyvlvpe1m7s/natashataiqianhui_304_18_physicstrackerfamodel.trz
Windows PC
Mac OS
Linux
NRF2013-EDU001-EL017Physics
Sec
Kinematics(e) plot and interpret a distance-time graph and a speed-time graph
Simulation / Manipulative
http://weelookang.blogspot.sg/2014/05/tracker-camelialim-student-video-ping.html
physics of ping pong ball model
x = if(t<3.58,0.58*(t-1.869),1.01+0.3631*(t-3.58))
y = if(t<3.58,-1.737E-1+2.473E-1*t-8.133E-2*t^2,-2.761E0+1.015E0*t-9.546E-2*t^2)
https://www.dropbox.com/s/9u4hjw26agjm3f0/CameliaLim312_22physics_ptmodel.trz
author of video: camelialim
author of model: lookang
https://www.dropbox.com/s/9u4hjw26agjm3f0/CameliaLim312_22physics_ptmodel.trz
Windows PC
Mac OS
Linux
NRF2013-EDU001-EL017Physics
Sec
Kinematics(e) plot and interpret a distance-time graph and a speed-time graph
Simulation / Manipulative
http://weelookang.blogspot.com/2014/05/tracker-dianielleteo-student-video.html
physics of squash ball model
x = if(t<0.168,-1.216E-2-9.791E0*t,-1.59+2.669E0*(t-0.168)+3.257E-1*(t-0.168)^2)
y = if(t<0.168,-9.744E-4+3.769E0*t,0.61+1.308E0*(t-0.168)-4.001E-1*(t-0.168)^2)
https://www.dropbox.com/s/qdrc1kxtzcj6hqi/DanielleTeo312pic_00352model.trz
author of video: dianielleteo
author of model: lookang
https://www.dropbox.com/s/qdrc1kxtzcj6hqi/DanielleTeo312pic_00352model.trz
Windows PC
Mac OS
Linux
NRF2013-EDU001-EL017Physics
Sec
Dynamics(a) describe the effect of balanced and unbalanced forces on a body
(b) describe the ways in which a force may change the motion of a body
(c) identify forces acting on an object and draw free body diagram(s) representing the forces acting
on the object (for cases involving forces acting in at most 2 dimensions)
Simulation / Manipulative
http://weelookang.blogspot.sg/2014/05/tracker-wangyuxing-student-video.html
physics of basket ball model
vx = -5.301
vy = 6.701
Fx = 0
Fy = -5.292*2 = -10.58
https://www.dropbox.com/s/a6lsc4cwjw7rqyc/wangyuxing_312_28_trackermodel.trz
author of video: wangyuxing
author of model: lookang
https://www.dropbox.com/s/a6lsc4cwjw7rqyc/wangyuxing_312_28_trackermodel.trz
Windows PC
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NRF2013-EDU001-EL017Physics
Sec
Kinematics(i) state that the acceleration of free fall for a body near to the Earth is constant and is
approximately 10 m/s2

(j) describe the motion of bodies with constant weight falling with or without air resistance,
including reference to terminal velocity
Simulation / Manipulative
http://weelookang.blogspot.sg/2014/05/tracker-deeakdev-student-video.html
physics of badminton shuttlecock model
vx = -0.3991
vy = 0.7494
Fx = -kx*vx where kx = 0.12
Fy = -0.1666-ky*vy = where ky = 0
https://www.dropbox.com/s/zed3f9ix44fpk32/312_deeakdev_ptmodel.trz
author of video: DeeaKDev
author of model: lookang
https://www.dropbox.com/s/zed3f9ix44fpk32/312_deeakdev_ptmodel.trz
Windows PC
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Linux
NRF2013-EDU001-EL017Physics
Sec
Dynamics(a) describe the effect of balanced and unbalanced forces on a body
(b) describe the ways in which a force may change the motion of a body
(c) identify forces acting on an object and draw free body diagram(s) representing the forces acting
on the object (for cases involving forces acting in at most 2 dimensions)
(d) solve problems for a static point m
Simulation / Manipulative
http://weelookang.blogspot.sg/2014/05/tracker-koaytzemin-student-video-roller.html
physics of roller blading down a slope model
vx = -0.3991
vy = 0.7494
Fx = g*sin(5.7*pi/180)-k*vx where g = 9.81, k= 0.708
Fy = 0
https://www.dropbox.com/s/84bov2zjxuld6ze/KoayTzeMinrollerbladingmodel.trz
author of video: KoayTzeMin
author of model: lookang
https://www.dropbox.com/s/84bov2zjxuld6ze/KoayTzeMinrollerbladingmodel.trz
Windows PC
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Linux
NRF2013-EDU001-EL017Physics
Sec
Kinematics(g) deduce from the shape of a speed-time graph when a body is:
(i) at rest
(ii) moving with uniform speed
(iii) moving with uniform acceleration
(iv) moving with non-uniform acceleration
Simulation / Manipulative
http://weelookang.blogspot.com/2014/05/tracker-samanthayom-student-video.html
physics of sailing with a moving reference frame
this technique allows determination of motion
x1 = -0.2281*t m/s
x2 = 0.4959*t m/s
https://www.dropbox.com/s/pdoudzku1f2kvft/physics_pt_samanthayom_26_312offsetorigindone.trz
author of video: samanthayom
author of movable reference frame: lookang
https://www.dropbox.com/s/pdoudzku1f2kvft/physics_pt_samanthayom_26_312offsetorigindone.trz
Windows PC
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NRF2013-EDU001-EL017Physics
Sec
Kinematics(d) interpret given examples of non-uniform acceleration
Simulation / Manipulative
http://weelookang.blogspot.sg/2014/05/tracker-cheryltan-student-video-frisbee.html
physics of Frisbee motion
this model suggests the Frisbee motion is a non-uniform acceleration motion in both x and y direction.
https://www.dropbox.com/s/azhjb2q1vbhfc5a/Cheryltantracker_5model.trz
vx = 7.0 m/s
vy = 5.05 m/s
fx = -2.804E0*t^2+7.713E0*t-7.861E0
fy = 3.977E-1*t-4.819
author of video: Cheryltan
author of model: lookang
https://www.dropbox.com/s/azhjb2q1vbhfc5a/Cheryltantracker_5model.trz
Windows PC
Mac OS
Linux
NRF2013-EDU001-EL017Physics
Sec
Kinematics(f) deduce from the shape of a distance-time graph when a body is:
(i) at rest
(ii) moving with uniform speed
(iii) moving with non-uniform speed
(g) deduce from the shape of a speed-time graph when a body is:
(i) at rest
(ii) moving with uniform speed
(iii) moving with uniform acceleration
(iv) moving with non-uniform acceleration
Simulation / Manipulative
http://weelookang.blogspot.com/2014/05/tracker-rachelong-student-video-tennis.html
physics of tennis ball drop in water
Kinematics Model
y = if ( t<0.29,(-2.137E0)*t^2-1.976E-1*t+2.310E-1,if(t<0.735,9.542E-1*(t)^2-9.368E-1*(t)+0.17,if(t<0.902,-9.661E-1*t^2+1.592E0*t-6.479E-1,if(t<1.169,6.172E-1*t^2-1.284E0*t+6.580E-1,0))))
https://www.dropbox.com/s/e8uvoq7eq1hxtd6/Rachelongapplicationsmodel.trz
author of video: rachelong
author of model: lookang
https://www.dropbox.com/s/e8uvoq7eq1hxtd6/Rachelongapplicationsmodel.trz
Windows PC
Mac OS
Linux