PHYSICS · Single correct · CBSE · Physics · Force and Laws of Motion · Force and Laws of Motion
Problem
A rubber ball, of mass 250 g, travelling at 4.0 ms−1 hits a wall perpendicularly and bounces off with a speed of 3.0 ms−1. The time of impact is 0.2 s.Which of the following gives the best estimate of the average force exerted by the wall on the rubber ball?
(1) 0.25 N
(2) 1.25 N
(3) 8.75 N
(4) 50.0 N