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A 1.50 3 103 - kg car starts from rest and accelerates uniformly to 18.0 m/s in 12.0 s. Assume that air resistance remains constant at 400 N during this time. Find the average power developed by the engine

In this question, why do we not find the distance by using the speed formula? If we know that v = displacement over time, why do we have to use displace = Vit+1/2at^2 ?

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onyebuchinnaji

The average power developed by the engine is 7,200 W.

Average power of the engine

The average power developed by the engine is calculated as follows;

P(avg) = FV

where;

  • F is the air resistance force
  • V is the velocity of the car

Substitute the given parameters and solve for average power of the car's engine.

P(avg) = 400 N x 18 m/s

P(avg) = 7,200 W

Thus, the average power developed by the engine is 7,200 W.

Learn more about average power here: https://brainly.com/question/19415290

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