Two billiard balls each of mass 0.05 kg moving in opposite directions with speed `6ms^(-1)` collide and rebound with the same speed . What is the impulse imparted to each ball due to the other ?

Explanation

Here , initial momentum of the ball
A = 0.05(6)= 0.3kg `"ms"^(-1)`
As the speed is reversed on collision , final momentum of the ball A = 0.05 (-6)
= - 0.3 kg `ms^(-1)`
Impulse imparted to ball A = change in momentum of ball A = final momentum -
initial momentum = -0.3-0.3= -0.6 kg `ms^(-1)`.