Question

A car travelling at a constant speed of 20m per second over a constant frictional resistance of 300 new time. What is the horse power of their engine (1hp=¾kg)

Answer 1

Explanation:

ans: 8hp

Explanation:

power= work×time

p=w/t

work=force×distance

w=Fd

substituting:

p=Fd/t. P= Fb

given that F

=300N & V=20m/s

P=(300N) (20m/s)

P=6000w

P=6KW

converting to horse power

6Kw×(1hp/3/4 kw ) 8Hp

so, answer is 8hp