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10 Cards in this Set
- Front
- Back
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energy
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anything that can do work (force
applied through a distance) |
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work
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force times distance w=fd, measured in joules
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joules
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the SI unit for energy, equal to one newton times a meter
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power
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work per unit time measured in J/S or watts
power=work/time |
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kinetic energy
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moving, the energy that an object has as a result of its motion
1/2 mv squared |
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potential energy
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stored
massxgravityxheight |
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consevation of mechanical energy
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in a closed system, energy cannot be created or destroyed, only transfered from one form to another
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law of conservation of mechanical energy
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in a closed system, energy cannnot be created or destroyed
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pedulum
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a rotational device comprised of a mass on a string that oscillates as the result of gravity.
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PEgi + KEi = PEgf + KEf
consevation of mechanical energy equation |
mghi + 1/2mvi (squared) = mghf + 1/2 mvf (squared)
(mghi = 1/2mv squared) |
