Across
- 4. Final and steady
- 6. When the resultant force is zero
- 9. Output divided by input
- 12. Rate of doing work
- 14. a thousand million
- 15. Towards the centre
- 17. Force times time
- 18. At an angle to the horizontal
- 20. Has no direction
Down
- 1. Due to movement
- 2. The ability to do work
- 3. Has direction
- 5. Rate of change of velocity
- 7. Force times displacement
- 8. Mass times velocity
- 10. So small that it can be ignored
- 11. Rate of change of momentum
- 13. Rate of change of velocity
- 16. A collision when kinetic energy is not conserved
- 19. Its measured in kilograms