Across
- 4. stays constant in uniform circular motion
- 7. net force if motion is uniform
- 8. motion of a pendulum for example
- 9. describes the roughness of surfaces
- 12. digit reporting rules for answers
- 15. name for the force of gravity
- 16. interference where two wave crests meet
- 17. measured in Joules
- 19. net force that results in circular motion
- 20. Earth's period
Down
- 1. calculated the orbits of the planets
- 2. displacement, but not distance
- 3. the study of motion
- 5. satellites that stay above the same location
- 6. for example: Newtons, meters, seconds
- 10. 1000
- 11. the inverse of period
- 13. described how gravity works
- 14. for example 10 m/s, W
- 18. force perpendicular to a surface