Newtons Laws of Motion MS-PS2-1
NGSS

A collision where kinetic energy is transferred between particles but their total kinetic energy remains the same
Elastic collision
A collision where kinetic energy is transferred between particles but their total kinetic energy remains the same is called an elastic collision. In simple terms, an elastic collision is when objects bounce off each other without losing any energy.

For every action, there is an equal and opposite reaction
Newtons third law of motion
For every action, there is an equal and opposite reaction. Newton's Third Law of Motion. When one object pushes or pulls on another object, the second object pushes or pulls back with the same strength in the opposite direction.