A3 - Work, energy and power

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5 Terms

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work done by a force

the product of the force in the direction of the displacement times the distance travelled

2
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work done by a varying force

area under the curve of force/distance graph

3
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total mechanical energy

kinetic energy + potential energy

ET = EK + EP

4
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isolated system

if no work is done on the system from the outside, and total mechanical energy of the system is conserved

5
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power

the rate at which work is being performed, or the rate at which energy is transferred