Question:
Two billiard balls A and B, each of mass 50 g and moving in opposite directions with speed of 5 m/s each, collide and rebound with the same speed. If the collision lasts for 10-3 seconds, which of the following statements are true?
(a) the impulse imparted to each ball is 0.25 kg.m/s and the force on each ball is 250N
(b) the impulse imparted to each ball is 0.25 kg.m/s and the force exerted on each ball is 25 × 10-5 N
(c) the impulse imparted to each ball is 0.5 Ns
(d) the impulse and the force on each ball are equal in magnitude and opposite in direction
Solution:
The correct answer is:
c) the impulse imparted to each ball is 0.5 Ns
d) the impulse and the force on each ball are equal in magnitude and opposite in direction