In all interactions or collisions,
In an inelastic collision, kinetic energy is not conserved.
Newton’s third law of motion:
Newton’s second law of motion:
Newton’s first law of motion:
Kinetic energy is conserved in a perfectly elastic collision;
When two bodies interact, the forces they exert on each other are equal and opposite.
momentum and total energy are conserved.
The resultant force acting on a body is equal to the rate of change of its momentum.
An object will remain at rest or keep travelling at constant velocity unless it is acted on by a resultant force.
It is transferred into other forms of energy (such as heat or sound). Most collisions are inelastic.
relative speed is unchanged in a perfectly elastic collision.