Question

is there any work done by the car if it moves in a uniform speed on a smooth level road? neglect air resistance​

Answer 1

Answer:

Explanation:Work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work. ... You have to exert a force AND move something to qualify as doing work.

Answer 2

No, there is no work done in this case. Since it is in uniform motion, there is a constant speed.

And according to the work - energy theorem,

Work done = ∆KE = ½ m(v² - u²)

⇒ W = ½ m(v² - v²) (v = u; you can find it through v = u + at equation)

⇒ W = ½ m × 0 = 0.