Energy

Question 1

Which of the following objects have kinetic energy? Check all that apply.

Revolt · Accepted Answer

a book inside a moving vehicle; a running cat; a falling meteorite

Question 2

A person moves a book from a 30-cm high coffee table to the top shelf of a bookshelf approximately 2.5 m high. Which statement correctly describes the gravitational potential energy of the book?

Revolt · Accepted Answer

It has more gravitational potential energy on the shelf than on the table.

Question 3

Object A has 604 J of kinetic energy and 285 J of gravitational potential energy. Object B has 481 J of kinetic energy and 300 J of gravitational potential energy. Which object has more mechanical energy?

Revolt · Accepted Answer

Object A has more mechanical energy.

Question 4

A bathtub is half full of warm water. How could the thermal energy of the water be increased? Check all that apply.

Revolt · Accepted Answer

Add hot water to the tub.; Heat the water in the tub without adding more water.; Add more water at the same temperature to the tub.

Question 5

What energy is involved when wood burns in a campfire? Check all that apply.

Revolt · Accepted Answer

chemical energy; thermal energy; electromagnetic energy

Energy Answers

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