Question

Newton's Second Law for a System of Particies Name Date Model: In the model below, the cue ball hits the 2 ball in a head-on collision 1. What direction will the 2 ball travel after the collision? 2. What direction with the cue bal move after the collision? 3. So, we could say that the cue ball- billard ball keeps moving in the 4 If we assume that the friction between the ball and table is negligble, what outside forces act on the cue ball-billiard ball system direction during the collision? What is the other outside force (still neglecting friction) acting on the cue ball- bilard ball system during the collision? 6. How does your answer from 95 explain the result from #3? (ie., what do the two forces in 4 and 5 add up to?) STOP We know that mx, andymy andm We could also write this in vector form, by wirting 2mF We could also write this in expand fom as: Mr+mi+m,i 7. Take the derivative of this expanded form of the center of mass equation with respect to time: 8. Take the derivative with respect to time again STOP Read This So. F Ma-where F is the sum ofl all of the external forces, M is the sum of all of the masses of the system, and am is the acceleration of the center of mass 9. Is your result to #6 consistent with hs statement? yes or no (circle one) Explain.

Answer 1

Since this is a head - on collision, after collision the 2 ball travels along the same direction of motion as of cue ball before collision (2) Along the same initial direction of motion, as collision is head - on (3) Same direction (4) Only weight of balls in vertically download and normal contact force by table is vertically upward direction act during collision.