Across
- 1. it's also called law of inertia
- 3. it determines how hard it is to stop something from moving.
- 6. SI unit for force
- 7. SI unit for mass
Down
- 1. is a force that goes against motion
- 2. law of Newton that relates acceleration and mass
- 4. collision for example of two billiard balls
- 5. force that is perpendicular to the surface