Question

A body of mass 2kg makes a perfectly inlastic collision with a particle in the rest if after the collision both bodies moving with the same direction.calculate the mass of the other body​

Answer 1

Answer:

1.2 kg

Explanation:

By conservation of linear momentum

2v0 =2(  4 v0 )+mv⇒2v  0  = v0/2+mv⇒  2 3v0 mv....(1)

since collision is elastic

vseparation =vapprach ⇒v−v0/4=v0 ⇒  4 5v0 =v....(2)

equating (2) and (1)

4 3v 0 =m(  4 5v0 )⇒m=  56  =1.2kg