Across
- 4. Increase in speed: unbalanced force
- 8. Activity involving mental or physical effort
- 9. The unit that america uses to measure work
Down
- 1. An amount of space between two things
- 2. Physical substance on earth
- 3. The unit to measure work and energy
- 5. Natural power that all living things have
- 6. An objects weight
- 7. A push or a pull
- 8. The formula to find work