Across
- 2. a force that acts without objects touching
- 5. a contact force that opposes motion through air
- 8. a quantity with both magnitude and direction
- 9. speed in a given direction
- 11. the variable you deliberately change in an experiment
- 13. a quantity with magnitude only
- 14. a contact force that resists motion between two surfaces
Down
- 1. a force that requires objects to touch
- 3. the variable you measure in an experiment
- 4. the size or amount of a quantity
- 6. how fast something moves, calculated as distance divided by time
- 7. the rate of change of velocity
- 10. a variable kept the same to ensure a fair test
- 12. a non‑contact force of attraction between masses