True / False type questions : In an inelastic collision, the final kinetic energy is always less than the initial kinetic energy of the system.

State if each of the following statements is true or false. Give reasons for your answer. a) In an elastic collision of two bodies, the momentum and energy of each body is conserved. b)Total energy of a systm is always conserved,no matter what internal and external forces on the body are present. Work done in the motion of a body over a closed loop is zero for every force in nature. d) In an inelastic collision, the final kinetic energy is always less than the initial kinetic energy of the sytem.

In an inelastic collision, the kinetic energy after collision

Change in kinetic energy of the system is equal to

Rotational kinetic energy is 50% of translational kinetic energy.What is the object?

A block moves with a certain speed and collides with another identical block kept at rest . There is maximum possible loss of kinetic energy in this collision . Find the ratio initial kinetic energy of the sustem to that with final kinetic enegy of the system .

True / False type questions : In an elastic collision of two bodies, the momentum and energy of each body is conserved.

In what is the loss in kinetic energy of the system due to impact ?

Assertion : In elastic collision, kinetic energy is conserved. Reason : Energy is always conserved.

What is a perfectly inelastic collision? Show that kinetic energy is invariably lost in such a collision.