Across
- 3. push or pull on an object
- 6. scientist who studied the motion of objects
- 8. to speed up
- 9. the process of changing position
- 11. forces acting that combine and form a net force that is not zero
- 13. a sudden movement in one direction
- 14. the sum of all forces
Down
- 1. an educated guess
- 2. a contact force that resists the sliding motion of two surfaces that are touching
- 4. forces acting that combine and form a net force of zero
- 5. to make a copy or repeat
- 7. the speed and direction of a moving object
- 9. the measurement of how much matter is in an object
- 10. acts to resist motion
- 12. ability to cause change