Across
- 2. According to ____, for every action force, there is a reaction force equal in strength and opposite in direction.
- 5. Two billiard balls bouncing off each other is an example of a(n) ____.
- 6. Energy of motion is called ______.
- 9. The mass of an object multiplied by its velocity equals its ____.
- 10. ____ is force times distance moved in the direction of the force.
- 11. The ____ states that the total amount of momentum in a closed system cannot change.
- 13. The unit of energy needed to push with a force of one newton over a distance of one meter is one ____.
Down
- 1. Energy due to position is known as ____.
- 3. When two objects collide and stick together or change shape, it is called a(n) ____.
- 4. The ____ states that energy can never be created or destroyed, just changed from one form to another.
- 7. ____ is needed to cause change to an object, such as changing its speed or height.
- 8. ____ is calculated by multiplying a force and the time needed for the force to act.
- 12. When two or more objects hit each other, a ____ occurs.