1.1. the resistance that one surface or object encounters when moving over another.
1.2. Something making another thing move.
2. Acceleration
2.1. increase in the rate or speed of something.
2.2. How fast something speeds up
3. Force
3.1. strength or energy as an attribute of physical action or movement.
3.2. To pull or push
4. Speed
4.1. the rate at which someone or something is able to move or operate.
4.2. How fast something is going
5. Distance
5.1. an amount of space between two things or people.
5.2. How far something is
6. Time
6.1. the indefinite continued progress of existence and events in the past, present, and future regarded as a whole.
6.2. The moment of the day
7. Velocity
7.1. the speed of something in a given direction.
7.2. Right, left, forward, or backwards
8. Gravity
8.1. the force that attracts a body toward the center of the earth, or toward any other physical body having mass. For most purposes Newton's laws of gravity apply, with minor modifications to take the general theory of relativity into account. 2.
