Question

In an elastic collision

Options

• the initial kinetic energy is equal to the final kinetic energy

• the final kinetic energy is less than the initial kinetic energy

• the kinetic energy remains constant

• the kinetic energy first increases then decreases.

Answer 1

the final kinetic energy is less than the initial kinetic energy

As some energy is loss into heat in an inelastic collision, the final kinetic energy is less than the initial kinetic energy.