The state of no action or force.
The use of energy.
To increase speed, or get faster.
The force that slows the motion of one object sliding over another.
The combination of force and motion.
The highest point of a wave.
A change in position.
The measure of the force of gravity on an object.
A push or a pull.
The distance between one crest and the next.
The distance an object moves in a certain period of time.
A disturbance that travels in matter or space.
The lowest point of a wave.
The force that pulls two objects towards each other.
How far an object moves.