Across
- 3. two or more moving objects hitting each other
- 4. at 90 degrees to something
- 5. the rate of increasing velocity
- 10. getting slower, decreasing velocity
- 11. a type of pushing force, from the motors of a vehicle
- 12. a push or a pull
Down
- 1. the slope of a line or surface
- 2. the distance a particle has moved from its position
- 6. squashing together
- 7. a force between two solid surfaces trying to move across each other that tries to stop movement happening
- 8. the force of gravity acting on a body
- 9. the amount of matter in an object