MotionForcesEnergy

2. Scientifically, this only happens if a force causes an object to move.
3. The rate at which work is done.
4. energy, The energy an object has because it is in motion.
6. Any device that makes work easier by changing the direction or size of a force.
7. A percentage measuring how much input work is converted to useful output.
8. advantage, The ratio of output force to input force.
10. potential energy, Energy an object has because of its height above the ground.
11. machine, A device that does work with a single movement.
13. The fundamental ability to do work or cause change.
14. machine, A bike or a pair of scissors, for example; it’s made of two or more simple machines.

1. energy: Stored energy waiting to be used.
5. potential energy, Energy stored in the bonds of atoms, like in food or gasoline.
6. energy, The sum of an object’s potential and kinetic energy.
9. of conservation of energy, The rule stating energy cannot be created or destroyed, only transformed.
11. The collection of objects you are studying, separated from the rest of the world by an imaginary boundary.
12. potential energy, Energy stored in a stretched rubber band or a compressed spring.