Energy, Work, and Power

The ability to do work or cause change:

• work

• energy

• momentum

• power

Energy in the form of motion.

• mechanical energy

• potential energy

• kinetic energy

• momentum

Stored energy in the form of position or condition.

• potential energy

• kinetic energy

• momentum

• mechanical energy

What is needed to calculate work?

• force

• distance

• time

• mass

A student needs 10 Newtons of force to lift a box to the top of a 2 meter shelf. How much work do they do?

• 12 J

• 8 J

• 20 J

• 5 J

What is mechanical energy?

• total kinetic energy

• the energy of motion

• total kinetic and potential energy

• temperature plus heat

A worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object?

• 18 m

• 4 m

• 10 m

• 6 m

Which of these items is not part of the law of conservation of energy?

• energy cannot be created

• energy cannot be destroyed

• energy can be transferred between forms

• energy is destroyed by friction

Where is the kinetic energy of pendulum at its highest?

• at the top of the swing

• at the bottom of the swing

• at 1/4 of the swing

• at 3/4 of the swing

What is needed calculate power?

• work

• time

• mass

• distance