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March 29, 2017

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A 20 N cat is sitting on a branch 5 meters high.
What is the PEg of the cat?
what is the KE of the cat?
What is the total energy of the cat?

  • physics - ,

    im guessing PE is potential energy
    eqn is PE=mgh
    20N is weight of cat, which is equal to Fg, which really is Fg=mg
    so simply mgh=20x5=100.
    The cat's kinetic energy is = .5mv(2) (the two is a superscript, meaning the v is squared)
    Regardless it's velocity is = to 0 when it is sitting, right? so KE=0

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