A particle of mass 5kg strikes a body of mass 2.5kg at rest elastically. The 2.5kg mass after collision moves with a kinetic energy of 5J. The kinetic energy of 5kg mass before collision is

A Iong slender rod of mass 2 kg and length m is placed on a smooth horizontal table. Two particles of masses 2 kg and 1kg strike the rod simultaneously and stick to the rod after collision as shown in fig. Velocity of the centre of mass of the rod after collision is

A particle of mass 2kg moving with speed 4m/s , collides perfect inelastically with another particle of mass 4kg at rest.The loss of kinetic energy of system in the collision is A. (32)/(5)J B. (16)/(3)J C. (16)/(5)J D. (32)/(3)J

The kinetic energy of a body of mass 3 kg and momentum 2 Ns is

A 4 kg mass and 1 kg mass are moving with equal linear momenta.The ratio of their kinetic energies is

A body of mass 20 gm is moving with a certain velocity. It collides with another body of mass 80 gm at rest. The collision is perfectly inelastic. The ratio of the kinetic energies before and after collision of the system is

A body of mass 4 kg moving with velocity 12 m//s collides with another body of mass 6 kg at rest. If two bodies stick together after collision , then the loss of kinetic energy of system is

A sphere of mass 2kg strikes another sphere of mass 3kg at rest with a velocity of 5ms^(-1) .If they move together after collision, then common velocity is

The kinetic energy of a body of mass 2 kg and momentum of 2 Ns is