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?

Question

Paola Decker

Mathematics

12 July, 19:58

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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Answers (1)

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Kristen Mccullough · Answer 1

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