Force and Motion

2. Output / The work done on a machine; The product of output force and distance force is exerted.
5. Machines / Make work easier for us by allowing us to push or pull over increased distances.
8. Efficiency / A quantity, usually expressed as a percentage that measures that ratio of work output to work input.
10. / A measure of the amount of matter in an object.
11. / A measure of the gravitational force exerted on an object.
12. / A force that opposes motion between two objects that are touching.
13. / The rate at which work is done or energy is transformed.
14. / Distance traveled per unit time.

1. / The unit used to express energy.
3. / The speed of an object, in a specific direction.
4. Machine / A machine made up of more that one simple machine.
6. / A device that helps do work by either overcoming a force or changing the direction of the applied force.
7. / A force attraction between objects that is due to their masses.
9. Third Law of Motion / For every action force, there is an equal and opposite reaction force.
12. / A push or pull exerted on an object in order to change the motion of the object.