A particle of mass m_(1)=4 kg moving at 6hat(i) m/s collides perfectly elastically with a particle of mass m_(2)=2kg moving at 3hat(i)m//s.

A particle of mass m_(1)=4 kg moving at 6hat(i) m/s collides perfectly

1.	A particle of mass m_(1)=4 kg moving at 6hat(i) m/s collides perfectly elastically with a particle of mass m_(2)=2kg moving at 3hat(i)m//s.
Answer» VELOCITY of centre mass is `5hat(i)m//s` The velocities of the particles relative to the centre of mass have same MAGNITUDE SPEED of individual particle before and after collision remains same The velocity of particles relative to CM after collision are `VEC(V)_(1f//cm)=-hat(i)m//s vec(V)_(2f//cm)=-2hat(i)m//s` Answer :A::D