Across
- 2. force equals mass x acceleration
- 5. a system of units
- 6. the sum of forces acting on a particle
- 7. the action of one object or surface rubbing together
- 9. the property of matter that continues to stay in rest
Down
- 1. two forces acting in the same direction
- 3. the increase of the rate or speed
- 4. an action performed in a situation
- 8. what is used to move something