Lionel22 Lionel22

03-03-2016
Biology

Answered

the total energy in a system is 30J and the PE is 20J. what is the KE?

Verified Answer :

kiki134 kiki134

03-03-2016

Total mechanical energy = potential energy + kinetic energy.

If we plug in our numbers:

30 = 20 + KE

Let's solve for KE:

30-20= KE

10 = KE

If we go back to the original equation:

30 = 20 + 10

Thus we know this is correct.

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