8
QuizMultiple Choice

Energy Transformations

Question 8 • 350CR Integrated Science

A bird has a kinetic energy of 3 J and a potential energy of 25 J. What is the mechanical energy of the bird?

Answer
A
3 J, because mechanical energy is the same as kinetic energy
B
22 J, because mechanical energy is the difference of the potential energy and kinetic energy
C
25 J, because mechanical energy is the same as potential energy
D
28 J, because mechanical energy is the sum of the potential energy and kinetic energy

Explanation

Mechanical energy is the sum of an object's kinetic energy and potential energy. Add the given values: 3 J + 25 J = 28 J. Therefore, the bird's mechanical energy is 28 J, matching “the sum of the potential energy and kinetic energy.”

AI-written and checked against the verified answer.

Previous
Next