CocoMa1rtashan0
CocoMa1rtashan0 CocoMa1rtashan0
  • 27-09-2016
  • Physics
contestada

A 1300 kg sports car accelerates from rest to 95 km/h in 7.4 s. What is the average power delivered by the engine?.

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taskmasters
taskmasters taskmasters
  • 30-09-2016
To calculate the power for this system, we use the formula given as:

Power = kinetic energy / time = 0.5mv^2 / t

where m is the mass, v is the velocity and t is the time. We calculate as follows:

Power = 0.5(1300)((95)(1000/3600))^2 / 7.4 = 61167.94 W = 61.17 kW
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