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WJSH 8 Work
Work and Energy Unit
| Question | Answer |
|---|---|
| the use of force to move an object some distance | work |
| formula for work | force x distance |
| unit of measurement for work | joule |
| this is transferred when work is done | energy |
| energy of motion | kinetic energy |
| stored energy | potential energy |
| potential energy caused by gravity | gravitational potential energy |
| formula for gravitational potential energy | mass x gravitational acceleration (9.8) x height |
| formula for kinetic energy | mass x (velocity)2 / 2 |
| formula for mechanical energy | potential energy + kinetic energy |
| states that energy cannot be created or destroyed, only transferred to other forms | law of conservation of energy |
| energy an object has due to the motion of its molecules | thermal energy |
| energy stored in chemical bonds that hold compounds together | chemical energy |
| potential energy stored in the nucleus of an atom | nuclear energy |
| the rate at which you do work | power |
| unit of measurement for power | watt |
| formula for power | work/time or energy/time |
| amount of work a horse can do in a minute | horsepower |
Created by:
jwandrey
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