1

Kinetic Energy
Energy of motion.
2

Law of Conservation of Energy
Scientific law stating that energy can be neither created nor destroyed but just changes form.
3

Mass
A measure of how much matter is present in a substance.
4

Motion
The change in an object's position with respect to time and in comparison with the position of other objects used as reference points.
5

Speed
The rate of change of position (or distance traveled) with respect to time