A body of mass m moving with velocity V in the X-direction collides with another body of mass M moving in Y-direction with velocity v. They coalesce into one body during collision. Calculate :
(i) the direction and magnitude of the momentum of the final body.
(ii) the fraction of initial kinetic energy transformed into heat during the collision in terms of the two masses.

Answer

`"["(mM(mu^(2)+v^(2)))/((M+ m)(mv^(2) + Mv^(2)))"]"`