Week 24 Extra Credit

Energy stored because of gravity is called:

• Gravitational Potential Energy

• Kinetic Energy

• Mechanical Advantage

• Chemical Energy

At which point does the ball has the greatest gravitational potential energy (GPE)?

• A

• G

• D

• C

• G

Which would have the LEAST gravitational potential energy (GPE)?

• A ball sitting on the ground

• Moon viewed from the Earth

• An airplane flying 30,000 feet above the ground

• A rock sitting on top of Mt. Everest

How could you increase the gravitational potential energy of an object without changing its mass and gravity?

• Make the object larger

• Lower the object towards the ground

• Raise the object farther off the ground

• Allow the object to roll on the ground

____________ is the ability to do work.

• Energy

• Force

• Friction

• Motion

You throw a ball into the air as shown in the diagram. At what point does the ball have the most gravitational potential energy?

• W

• X

• Y

• Z

At which position does the child on the swing have the most gravitational potential energy?

• W

• X

• Y

• Z

What kind of energy is in a rock at the edge of a cliff?

• Gravitational Potential Energy

• Kinetic Energy

• Both potential and kinetic energy

• none of the above

Which is the correct unit for expressing gravitational potential energy?

• Joule

• Newton

• m/s²

• meter

Which of the following is the correct equation for calculating an object's gravitational potential energy?

• PE = mgh

• PE = mg / h

• PE = mg + h

• PE = gh