A steel ball is moving in a straight line towards a rigid wall with a speed of
PHYSICS · Multi-part · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
A steel ball is moving in a straight line towards a rigid wall with a speed of 15ms−1. During its brief collision with the wall, an impulse of 3.6Ns acts on the ball and reverses its direction. After the collision the ball moves away from the wall with a speed of 10ms−1.
(i) Taking the initial direction of motion as positive, write the expressions for the momentum of the ball just before and just after the collision.
(ii) Using the given data, determine the mass of the steel ball.