Across
- 3. the forces that opposes the start of motion
- 5. is measured by the acceleration that it gives to freely falling objects
- 8. a push or pull
- 9. the forces between 2 surfaces that are in relative motion
- 10. perpendicular to the surface
Down
- 1. a force that points straight down
- 2. ¨action-reaction¨
- 4. the rate of change of velocity
- 6. the tendency of an object to resist a change in motion
- 7. the sum of all forces and its direction
- 8. an object in motion stays in motion unless acted upon