Thanks to Lim Jit Ning for sharing his video
Tracker Modeling in Bouncing Ball
Author of video: Lim Jit Ning https://www.youtube.com/watch?v=BM5fZ4bY-Tw
GB Droplookang.trk (55.06
KB) Author of model: lookang GB Drop.trk (48.04 KB )
Author of analysis: Lim
Jit Ning Worksheet-bouncing-ball.doc
(2222.5 KB ) Author
of worksheet: Lim Jit NingDoing more research by evidence based kinematic model construction process to substantiate this article.
- Wee L.K., Charles Chew, Goh G.H.,Lee T.L.,Samuel Tan (2012) Using Tracker as a Pedagogical Tool for Understanding Projectile Motion Physics Education, 47(4): 448. arXiv:1206.6489 [pdf]
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| Tracker Modeling in in Bouncing Ball Model is y = if (t < 0.475, -4.772*t^2-0.8*t-0.032, if(t<1.38,-4.899*t^2+9.112*t-4.693,if(t<2.18,-4.742*t^2+16.875*t-15.742,if(t<2.84,-4.616*t^2+23.123*t-29.89,0)))) |
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| Tracker Modeling in in
Bouncing Ball Model is y = if (t < 0.475,
-4.772*t^2-0.8*t-0.032,
if(t<1.38,-4.899*t^2+9.112*t-4.693,if(t<2.18,-4.742*t^2+16.875*t-15.742,if(t<2.84,-4.616*t^2+23.123*t-29.89,0))))
with Data Analysis to drive the evidence based kinematic
model construction process. |
- average acceleration on Earth's surface = 2*[(-4.772)+(-4.899)+(-4.742)+(-4.616)]/ 4 = 9.51 m/s^2 (hmmmm, need to check why not closer to 9.81 m./s^2)
- energy loss by bouncing ?
- coefficient of restitution ?