Across
- 2. The product of the force and the object's displacement.
- 3. The product of the average force on an object and the time interval over which it acts.
- 5. The ability of an object to produce a change in itself or the world around it.
- 7. The ratio of output work to input work.
- 11. machine A machine consisting of two or more simple machines.
- 14. force, The force exerted by the machine.
- 15. When the net external force on a closed system is zero.
Down
- 1. A unit of energy.
- 4. The product of the object's mass and the object's velocity.
- 6. force, The force exerted by a person on the machine.
- 8. A system which does not gain or lose mass.
- 9. Eases the load by changing either the magnitude or the direction of a force.
- 10. The work done divided by the time taken to do the work.
- 12. A relatively small unit of power.
- 13. energy, Energy resulting from motion.