PHYSICS!!

A car's engine can accelerate a car from rest to 30 m/s in 6 s. if the car's mass is 1300 kg, what is the power of the engine?

can someone give me the answer because i just want to verify it with my own?
thank you!

asked by Allison
  1. the answer i got is 288600W

    posted by Allison
  2. power= work/time= 1/2 m v^2 / tune

    I don't get that result.

    posted by bobpursley
  3. can you tell me exactly what you did instead of just giving me the formula?

    please and thank you

    posted by Allison
  4. To expand upon bobpursley's solution:
    P = W/t =(1/2 m v^2)/t = (m v^2)/(2t)
    m = 1300 kg, v = 30 m/s, t = 6 s
    The work is equal to the change in kinetic energy, which, since it started from rest, is simply (1/2) m v^2
    The formula given is the definition of power.

    posted by CANTIUS

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