Energy

Multiple Choice

Which has energy?

• Rock on the ground

• A pile of rocks

Fill in the Blank

A jogger whose mass is 60 kg is moving at a speed of 3 m/s. What is the joggers Kinetic Energy?

(write answers in the following format: number unit)

(Example: 25 m)

Multiple Choice

What type of potential energy is stored when a dam raises the water level of a river?

• elastic

• chemical

• atomic

• gravitational

Fill in the Blank

What is the gravitational potential energy of a ceiling fan that has a mass of 7 kg and is 4 m above the ground?

(Write the answer in the format: number unit to one decimal place)

(Example: 45.6 m/s)

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Multiple Choice

On a roller coaster, what % of your original gravitational potential energy is left when the cart is at the bottom of a hill that is half way between the ground and the highest point?

• 0%

• 100%

• 50%

• 25%

Multiple Choice

What did the gravitational potential energy from the top of the roller coaster get transformed into as it rolls to the bottom of the coaster?

• Kinetic

• Elastic

• Chemical

• Atomic