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Work and Energy
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Work is equal to the force times the cosign of the angle to which it is applied with respect to the direction (all that means just count the force that is in the same direction as the motion) times the displacement.
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The kinetic energy is equal to half the mass times the velocity squared.
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The gravitational potential energy of an object is equal to its mass times the acceleration due to gravity times its displacement from ground level (or any other arbitrary reference level).
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The work done on an object is equal to the change in kinetic energy plus the change in gravitational potential energy.
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The work done on an object is equal to one half the mass times the final velocity squared minus one half the mass times the initial velocity squared plus the mass times the acceleration times the final height minus the mass times the acceleration due to gravity times the initial height.
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Power (average) equals work divided by time.
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Power equals force times velocity.
If any of the above was unclear, or if you have any comments or suggestions, please E-mail me!
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