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Calculate the power developed by a 68.0 kg athlete who, in 20.0 seconds. runs up stairs that have a vertical height of 8.00 m
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Respuesta :

  • Mass=m=68kg
  • Height=h=8m
  • g=10m/s^2(Acceleration due to gravity)

Potential energy:-

  • mgh
  • 68(8)(10)
  • 680(8)
  • 5440J

Now

  • time=t=20s

So

Power:-

  • PE/t
  • 5440/20
  • 272W

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