Before the collision, block A, of mass 2.4 kg, is moving at 3.0 m/s. Block B, of mass 1.2 kg, is at rest. After the collision, blocks A and B stick together and move with velocity v. (i) Calculate 1. the momentum of block A before the collision, 2. the velocity v, 3. the impulse experienced by block B during the collision. (ii) Suggest why the total kinetic energy of blocks A and B after the collision is less than the kinetic energy of block. A before the collision.​