unit 7 -- power

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Power is involved in any event in which ​

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is transformed. The unit of power is ​

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.

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Power is the ​

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at which work is done. It is measured in ​

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. One watt is equal to ​

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.

Multiple Choice

A 1500 kg car accelerates from 0 to 60 mph (27 m/s) in 7 seconds. What is the power of the car?

• 28, 350 watts

• 3.857 watts

• 78,107 J

• 78,107 watts

Multiple Choice

The power of a small truck is 96,500 watts when it goes from 0 to 60mph. How many horsepower units is this? (1 hp = 746 watts)

• 129 hp

• 719,890 hp

• 44,750 hp

• 11,244 hp