Two billiard balls A and B, each of mass 50g and moving in opposite directions with speed of 5 ms^(1) each, collide and rebound with the same speed. If the collision lasts for 10^(-3) s, which of the following statements are true ?

Two billiard balls A and B, each of mass 50g and moving in opposite di

1.	Two billiard balls A and B, each of mass 50g and moving in opposite directions with speed of 5 ms^(1) each, collide and rebound with the same speed. If the collision lasts for 10^(-3) s, which of the following statements are true ?
Answer» The impulse imparted to each ball is 0.25 kg - `m s^(-1)` and the FORCE on each ball is 250 N The impulse imparted to each ball is 0.25 kg - `m s^(-1)` and the force exerted on each ball is `25 xx 10^(-5)` N The impulse imparted to each ball is 0.5 N - s The impulse and the force on each ball are equal in m agnitude and opposite in directions. Solution :Here`m_(1)= m_(2)50 (g )= (50)/( 1000)kg = (1)/(20) kg` Finalvelocity(u ) = `u_(1)= u_(2) = (5 m)/( s )` Timedurationof collision`=10^(3)` Changein LINEARMOMENTUM= m(v -u) `=(1)/(20)[-5 -5]=-0.5 Ns` force `= (" mpulse ")/("TIME ")= ("Change ")/( 10^(-3)` N `=(0.5)/( 10^(-3)) = 500N` Impulseand forceare oppositein direction