Two particles each of mass m, collide head on when their speeds are 2u and u. If they stick to each other on impact, when moving in opposite directions, their combined speed is

Two particles each of mass m, collide head on when their speeds are 2u

1.	Two particles each of mass m, collide head on when their speeds are 2u and u. If they stick to each other on impact, when moving in opposite directions, their combined speed is
Answer» u 2u u/2 3u/2 Answer :C