Question

how high off the ground is a book that has 120 J of potential energy and a 4-kg mass ?​

Answer 1

Answer:

3 m

Explanation:

PE = mgh

120 J = (4 kg) (10 m/s²) h

h = 3 m

Answer 2

The book is 3m high from the ground.

What is potential energy?

The energy by virtue of its position is called the potential energy.

PE = mgh

where, g = 9.81 m/s²

Given is the mass of book m =4kg and the potential energy P.E = 120J, then the height is

120 J = (4 kg) (10 m/s²) h

h = 3 m

Thus, the book is 3m high from the ground.

Learn more about potential energy.

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