Question

A 30gm carom striker moving with velocity of 10cm/s strikes a 5gm stationary carom disc head on elastically. The striker acquires a velocity of 6cm/s, the momentum gained by the disc is a) 30gm-cm/s b) 120gm-cm/s c) 50gm/cm/s d) 150gm/cm/s​

Answer 1

Answer:

b)

Explanation:

law of conservation of momentum

30*10+5*0=30*6+5*v

300=180+5v

5v=120

v=24cm/s

momentum of disc=120gmcm/s