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10 Cards in this Set

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

consevation of mechanical energy equation
mghi + 1/2mvi (squared) = mghf + 1/2 mvf (squared)
(mghi = 1/2mv squared)