List of top Physics Questions on work, energy and power asked in EAMCET

In two separate collisions, the coefficients of restitutions $ {{e}_{1}} $ and $ {{e}_{2}} $ are in the ratio 3: 1. In the first collision the relative velocity of approach is twice the relative velocity of separation. Then the ratio between the relative velocity of approach and relative velocity of separation in the second collision is:

A nucleus of mass 218 amu in Free State decays to emit an a-particle. Kinetic energy of the a-particle emitted is 6.7 MeV. The recoil energy ( in MeV) of the daughter nucleus is:

A body x with a momentum p collides with another identical stationary body y one dimensionally. During the collision y gives an impulse J to the body x. Then, the coefficient of restitution is: