A book on a 2-meter high shelf has a mass of 0.4 kg. What is its potential energy?

Explanation:

The formula for potential energy is:

where m is the mass, g is the gravitational acceleration, and h is the height.

The mass of the book is 0.4 kilograms. The gravitational acceleration on Earth is 9.8 m/s². The height of the book is 2 meters.

Substitute the values into the formula.

Multiply the first two numbers.

Multiply.

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