Gravity and Motion Puzzle

2. Various forms of power present in the universe.
3. force that attracts a body toward the center of the earth, or toward any other physical body having mass.
5. rate of change of an object's position, defined as its speed in an specific direction.
7. The average location of an object's weight, acting as a balance point.
9. Energy-The energy an object possesses due to its motion.
10. thick, protective layer of gases held closely to the Earth by gravity.
11. "Quantity of Motion"
14. force that resists or slows down the movement of two objects sliding against each other.
15. rate at which an object changes its velocity over time.
16. measure of how fast an object moves.
18. push or pull acting upon an object, resulting from its interaction with another object.
19. An object at rest, stays at rest, unless acted upon by an unbalanced force.
20. curved, circular, motion of a repeating path around an object in space.

1. measure of the force of gravity pulling down on an object
4. Every action in nature, there is an equal and opposite reaction.
6. total length of space between two points, objects, or locations.
8. The acceleration of an object depends on its mass and the amount of net force applied to it.
12. action or process of moving or being moved.
13. unchanging property of matter representing an object's inertia
17. higher mass means an object is harder to speed up, slow down, or change direction.