Week 7 Vocabulary
1) Friction   The force that keeps two objects from just sliding past each other if are touching.
2) Force A push or a pull.
3) Acceleration   Speeding up, slowing down, or  changing velocity.
4) Velocity Speed WITH a direction.
5) Speed

How fast it is moving.  How far it goes and the amount of time it takes (S= D/T) 

6) Balanced Forces  Equal forces on an object that cause no motion.
7) Unbalanced Forces Forces acting on an object which cause it to move. One force must be greater and one less.
8) Potential Energy The energy an object has when not moving.  This is stored energy waiting to be released when the object moves.
9) Kinetic Energy

The energy of motion.  The faster something is moving, and the more mass it has, the more kinetic energy.

10) Gravity

A force of attraction between any two things that occurs because of their mass.  More mass = more gravity.  More distance = less gravity.


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