Question

If a 3.5 gram ping pong ball were traveling to the right horizontally at 12 m/s, and a larger 12 g super ball were thrown directly behind it (also to the right) at 15 m/s so that the super ball bumped into and elastically collided with the ping pong ball, what would be the velocities of the two balls after the collision?

Answer 1

(1) given data;

let final velocities of ping pong and super ball as;

Solution;

Apply conservation of linear momentum;

Apply conservation of energy;

by solving the above two equation we get final velocities of ball (1) and (2);