2D Conservation of Momentum Example using Air Hockey Discs (13:27)
A 28.8 g yellow air hockey disc elastically strikes a 26.9 g stationary red air hockey disc. If the velocity of the yellow disc before the collision is 33.6 cm/s in the x direction & after the collision it is 10.7 cm/s at an angle 63.4° S of E, what is the velocity of the red disc after the collision?
This is an AP Physics 1 topic. Honestly, while this is an AP Physics 1 topic, I have yet to see a conservation of momentum problem on the AP Physics 1 exam which is in more than one dimension. This is certainly covered on the AP Physics C: Mechanics Exam, however, I don't think it actually is on the AP Physics 1 Exam. Does anybody have information which contradicts this statement? Content Times: 0:12 The problem 1:49 Breaking the initial velocity of disc 1 into its components 3:06 Conservation of momentum in the x-direction 5:24 Conservation of momentum in the y-direction 6:26 Solving for the final velocity of disc 2 using its components 8:40 Was this an elastic collision? 12:39 Movie Character Day! |
|
Thank you to my Quality Control help: Christopher Becke, Scott Carter and Jennifer Larsen
Multilingual? Please help translate Flipping Physics videos!
If you were curious where the known values came from in the video: Here are my calculations.
Picture Credits: "Nombre de los vientos". Licensed under Public domain via Wikimedia Commons
Multilingual? Please help translate Flipping Physics videos!
If you were curious where the known values came from in the video: Here are my calculations.
Picture Credits: "Nombre de los vientos". Licensed under Public domain via Wikimedia Commons