If gravity is the only force present, what is the total mechanical energy of a book falling off a shelf at a time when its potential energy is 50 J and its kinetic energy is 60 J?

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asked Jul 16, 2020 27.9k views

1 vote

If gravity is the only force present, what is the total mechanical energy of a

book falling off a shelf at a time when its potential energy is 50 J and its
kinetic energy is 60 J?

Physics
middle-school

Xmar asked

by Xmar

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1 Answer

4 votes

Answer:

110 J

Step-by-step explanation:

Mechanical Energy = Kinetic Energy + Potential Energy

= 60 J + 50 J

= 110 J

Zimkies answered Jul 20, 2020

by Zimkies

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