Chemistry Middle School

A student lifts a book from a desk.
How does the book’s energy change?

A. gains kinetic energy

B. gravitational potential energy increases

C. potential energy decreases

D. potential energy converted to kinetic energy

Answers

Answer 1
The answer is:D


This is because the potential energy (the book sitting on the desk and your hand moving toward the book) is being changed. As its being changed it turns into Kinetic energy because it is no longer at rest and because it is now in motion.

(Brainlyist?)
Answer 2

The capacity to perform work is defined as the energy. This energy can be stored in many forms. When a student lifts a book from a desk the potential energy is converted to kinetic energy. The correct option is D.

What is potential energy?

The energy stored by an object or the system by virtue of its position or arrangement of the parts is defined as the potential energy. An objects potential energy depends on its physical properties and the position of a system.

The energy possessed by an object because of its motion is called the kinetic energy. The simple activities like walking, running, throwing and falling involves kinetic energy. The kinetic energy of an object depends on the mass and speed.

Here when we lift a book which is at rest in the table, it possess potential energy and when it is lifted from the table it has acquired motion and so it has kinetic energy.

Thus the correct option is D.

To know more about potential energy, visit;

https://brainly.com/question/22764

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Related Questions

How can chemical energy be converted into mechanical energy?

A. turning on a flashlight

B. sharpening a pencil with an electric pencil sharpener

C. heating up bread in a toaster

D. eating breakfast and then going for a run

Answers

answer:

eating breakfast and then going for a run

Answer: D. Eating breakfast and then going for a run.

Explanation:

Eating breakfast is a chemical change and running is a mechanical change.

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