Posted by Sommer on Saturday, November 19, 2011 at 11:39pm.
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  Matt, Sunday, November 20, 2011 at 12:31am
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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