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)` s which of the following statement(s) is (are) true?
A. The impulse imparted to each ball is 0.25 kg `m//s` and te 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 `25xx10^(-5)N`
C. The impulse imparted to each ball is 0.5 N
D. The impulse and the force on each ball are equal in magnitude and opposite in direction

Answer 1

Correct Answer - C::D
`Ft=m(v-u)`
`Fxx10^(-3)=50/1000[(5-(-5)]`
`F=500N`
Impuse and force on the two bells are equal and in the opposite directions.