Physics

4. The manipulated variable.
7. Ratio of change in position to time interval over which change takes place.
9. When one object exerts a force on a second object, the second exerts a force on the first that is equal in magnitude but opposite in direction.
10. Quantity,like distance,that has only a magnitude, or size.
11. Change in position.
13. A constant that depends on the surfaces in contact.
16. An object with no force acting on it moves with constant velocity.
17. Force that opposes the start of motion.
18. The separation between two points.

1. Gravitational force exerted by a large body, usually Earth.
2. The magnitude of the velocity.
3. Forces that give materials their strength.
5. Responding variable.
6. Study of matter and energy and their relationships.
8. Quantity having both magnitude and direction.
12. Change in velocity divided by time interval over which it occurred.
14. The force that opposes the motion between two surfaces that are in contact.
15. The acceleration of a body is directly proportional to the net force on it and inversely proportional to its mass.