a 1000kg car accelerates from rest to 25m/s in7.5s. What is the avg power output of the car engine?

Question

Update:

a.20.8 KW

b.30.3 KW

c.41.7 KW

d.52.4 KW

Answer 1

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P = W/T

w = .5mv^2

w=.5*1000*25^2

w=312500J

P=312500/7.5

P=41666.67W

or P=41667W/1000

P=41.7KW