Thursday
March 30, 2017

Post a New Question

Posted by on .

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!

  • PHYSICS!! - ,

    the answer i got is 288600W

  • PHYSICS!! - ,

    power= work/time= 1/2 m v^2 / tune

    I don't get that result.

  • PHYSICS!! - ,

    can you tell me exactly what you did instead of just giving me the formula?

    please and thank you

  • PHYSICS!! - ,

    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.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question