PHet Skatepark Simulation Physics 11

What are the units for energy?

• Watts

• Joules

• Newtons

• meters

Kinetic Energy is defined as

• Energy stored due to its location
• Energy of motion
• Energy stored in the bonds of molecules
• Heat energy

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Select all of the objects that have kinetic energy. (You may click more than one object!)

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When does an object have NO kinetic energy?

• When it's at rest.

• When it's moving very slowly.

• When it has no electrical charge.

The equation to find kinetic energy is

• KE=1/2mv²
• KE=mgh
• KE=1/2kx²
• KE=Fd

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Gravitational potential energy is defined as

• the energy an object has due to its height above the ground

• the energy an object has due to its motion

• the energy a spring has due to its stretch

• the chemical energy stored in the molecules of atoms

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What kind of energy is in flowerpot sitting on a windowsill?

• Potential
• Kinetic

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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

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What are the two types of Mechanical Energy? (ME)

• Kinetic and Potential Energy
• Kinetic and Nuclear Energy
• Potential and Chemical Energy
• Thermal and Kinetic Energy

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What does the Law of Conservation of Energy state?

• Energy cannot be created or destroyed

• Nothing can exchange energy

• Energy will increase over time.

• Energy will decrease over time.

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