Across
- 3. This is a force that opposes motion between two surfaces that are touching
- 5. This acts in the opposite direction of gravity
- 7. This is the unit used for force
- 9. On Earth, this force pulls things down at 9.8 m/s2
- 10. Distance divided by time
- 12. 50 N to the right and 100 N to the left is an ____ force
- 13. A push or pull
- 14. The first law of motion is about this
Down
- 1. A change in velocity over time
- 2. This is a measure of how gravity pulls on mass
- 4. 50 N to the right and 50 N to the left is a ____ force
- 6. Something accelerates when it speeds up, slows down, or ____
- 8. Speed with a direction
- 11. The second law of motion states that F = __ x a