Kinetic Energy: Speed, Mass, and the Equation

What is kinetic energy?

• Energy due to an object's position

• Energy due to an object's motion

• Energy from the sun

• Energy stored in chemical bonds

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of the following objects has kinetic energy?

• A stationary car

• A moving plane

• A book on a table

• A rock at rest

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

How does speed affect kinetic energy?

• Kinetic energy decreases with speed

• Kinetic energy is not affected by speed

• Kinetic energy is inversely proportional to speed

• Kinetic energy increases with speed

Why do fast-moving objects have more kinetic energy?

• They have more energy transferred to them

• They have more mass

• They are larger in size

• They are closer to the ground

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

If two objects have the same speed, which one has more kinetic energy?

• The one with a larger volume

• The one with a higher temperature

• The one with more mass

• The one with less mass

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NGSS.MS-PS3-1

What is the kinetic energy equation?

• E_k = 1/2 * m * v

• E_k = m * v

• E_k = 1/2 * m * v^2

• E_k = m * v^2

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NGSS.HS-PS3-2

In the kinetic energy equation, what does 'm' stand for?

• Momentum

• Mass

• Motion

• Magnitude

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NGSS.HS-PS3-2

In the kinetic energy equation, what does 'v' represent?

• Volume

• Velocity

• Viscosity

• Voltage

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NGSS.HS-PS3-2

What is the kinetic energy of a plane with a mass of 20,000 kg traveling at 5 m/s?

• 500,000 J

• 250,000 J

• 100,000 J

• 50,000 J

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NGSS.MS-PS3-1

Why does a fast-moving particle have less kinetic energy than a slower-moving plane?

• Because the plane is faster

• Because the particle has less mass

• Because the particle has more mass

• Because the plane is larger

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NGSS.HS-PS3-2