Energy
Across
- 3. hat property of an object or a system which enables it to do work
- 5. a device for increasing a force or simply changing the direction of a force
- 8. energy energy of position, usually related to the relative position of two things, such as a stone and the earth
- 9. energy the energy due to the position or the movement of something; potential or kinetic energy
- 11. advantage the ratio of output force to input force for a machine
- 12. the product of the force on an object and the distance through which the object is moved
- 13. the SI unit of power; one watt is expended when one joule of work is done in one second
- 14. the SI unit of work and of all other forms of energy; one joule of work is done when a force of one newton is exerted on an object moved one meter in the direction of the force
- 15. a simple machine, made of a bar that turns about a fixed point
Down
- 1. the pivot point of a lever
- 2. energy energy of motion, equal to half the mass multiplied by the speed squared
- 4. the ratio of useful energy output to total energy input, or the percentage of the work input that is converted to work output
- 6. a type of lever that is a wheel with a groove in its rim, and one that is used to change the direction of a force
- 7. rate at which work is done or energy is transformed, equal to the work done or energy transformed divided by time
- 10. energy cannot be created or destroyed; it may be transformed from one form into another, but the total amount of energy never changes