Question

A car weighing 500kg moves with a constant speed on a rough labelled horizontal road under a force 1000N exerted by engine​

Answer 1

Answer:

so what do you want to ask?

Answer 2

Answer:

Is it necessary to do work to maintain a constant velocity with a body on a rough surface? ... It is always necessary to do work to maintain speed since there is always losses, regardless of the smoothness of the road.....

The tendency of an object to maintain its state of motion, to remain at rest or to keep moving at a constant velocity, is known as inertia. Mass is a good measure of inertia; light objects are easy to move, but heavy objects are much harder to move, and it is much harder to change their motion once they start moving.

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