Work Energy Power Review

A major league pitcher can throw a baseball with a kinetic energy of 150 J. How much work must the pitcher do to the ball to give it that much KE?

• 150 J

• 0

• Can’t tell without knowing the mass of the ball

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NGSS.MS-PS3-1

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What is the unit for power?

• what

• watt

• joule

• Jewel-Osco

Which requires more work – a person walking up stairs or a person running up stairs?

• walking

• running

• they require equal work

• no work is required for either because the movement is vertical

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NGSS.MS-PS3-5

Which requires more power – a person walking up stairs or a person running up stairs?

• walking

• running

• they require equal power output

• no power is required at all

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is the equation for power and energy?

• P = E/t

• E = P/t

• T = P x E

• P = W/t

How do you calculate power?

• P = W/t

• P = E/t

• P = w * t

• P = bbq/chicken

How do we calculate work?

• W = F * d

• w = f * D

• W = F * D

• w = f * d

The SI unit of work is?

• Joules

• Watts

• Newtons

• meters

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

The energy of movement is...? 

• Kinetic

• Potential

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

Energy that is stored is called...

• Kinetic

• Potential 

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NGSS.MS-PS3-2