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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