Kinetic Energy

What is energy?

• something that picks up things, like a magnet.

• Motion of an object

• ability to do work

• magic rays of sunshine that come down when you're feeling blue.

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NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-4

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

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NGSS.HS-PS3-2

The SI unit in which kinetic energy is measured is 

• Newton
• Kilogram
• Joules
• Metres per second

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NGSS.HS-PS3-2

True or false: the net work done on a body is equal to its change in kinetic energy.

• True
• False

Which equation would you use to find distance when you know mass, V_f, V_i, and Force?

• W = KE_f - KE_i

• F⋅d = KE

• W = 1/2 mv_f² - 1/2 mv_i²

• F⋅d = 1/2 mv_f² - 1/2 mv_i²

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NGSS.HS-PS2-1

When my velocity triples, my kinetic energy increases by ______ times.

• 9
•  3 
• 1.5
• 4.5

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NGSS.HS-PS3-2

A cheetah can run briefly with a speed of 31.0 m/s. Suppose a cheetah with a mass of 47.0 kg runs at this speed. What is the cheetah’s kinetic energy?

• 1457 Joules

• 22,584 Joules

• 15 Joules

• 45,167Joules

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NGSS.HS-PS3-1

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How much kinetic energy does a moving 6 kg object have if it moves with a velocity of 3 m/s?

• 27 J
• 18 J
• 9 J
• 2 J

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NGSS.HS-PS3-1

A 60 kg Ewok is travelling at a constant speed of 7 m/s. What is its kinetic energy in KJ?

• 1.47 KJ
• 210 KJ
• 147 KJ
• 1470 KJ

What is the kinetic energy of a 1500 gram object moving at a velocity of 100 m/s

• 112.5 J
• 7,500,000 J
• 75 J
• 7,500 J

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NGSS.HS-PS3-1