What is the power of an engine that pulls a 1000kg automobile at a steady speed of 10m/s along a level road?

Answer 1

0 HP
if there is no friction, pulling at a steady speed on a level road does not do work.

If there is kinetic friction μk, then

F=force = μk * mg
v=velocity = 10 m/s

Power = F.v j/s = F.v watts

Answer 2

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Answer 3

Steady speed means zero acceleration.
Since power=force*velocity and force is zero due to steady speed then power will also be zero.
In other words; power=force*velocity
Power=mass*acceleration *velocity
Since acceleration is zero.
Power=mass*0*velocity
Power=0hp OR 0watts