A car engine produces a constant power of p 230 hp the car, Ask an Expert

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A car engine produces a constant power of P = 230 hp. The car and motor have a combined mass of m = 1880 kg.

A) The car starts from rest, and after t = 5s what is the car's speed, in meters per second? You may assume no energy is required to spin the tires.

B) Assume a top fuel dragster of mass m = 1000 kg can accelerate and cover 450 m in 6.9 seconds from a dead stop. How much horsepower is the engine producing, assuming the acceleration is constant?

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