two identical particles moves towards each other with velocity 2v and V respectively what is the velocity of centre of mass
Answers
Answered by
5
Total mass = 2m
Velocity of centre of mass V
Momentum of system = (2m) * V = 2mV
The total momentum can also be worked out by adding the separate momenta. Take the object with velocity 2v to be moving in the positive direction.
Momentum of system = [m * (2v)] + [m * (-v)]
= 2mv -mv
= mv
So 2mV = mv
V = v/2 (answer C)
Similar questions