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10 June, 21:45

A 2000 kg car, initially at rest, is accelerated along a horizontal roadway at 3 m/s2. What is the average power required to bring the car to a final speed of 20 m/s?

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  1. 10 June, 23:12
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    Power = 120000 watts

    Step-by-step explanation:

    mass = 2000kg

    acceleration = 3m/s²

    velocity = 20m/s

    Force = mass x acceleration

    Force = 2000 x 3 = 6000 Newton

    Power = Force x velocity

    Power = 6000 x 20 = 120000 watts

    Since 1000 watts = 1kilo-watts

    Power = 120000 watts or 120 kilo-watts
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