Question

A car accelerates on a horizontal surface, with friction, over a distance. Which equation is equal to the work done by the engine of the car?


A. (change in kinetic energy of the car) + (frictional force) (distance)

B. (change in kinetic energy of the car) - (friction energy) (distance)

C. (change in momentum of the car) - (friction energy) (distance)

D. (change in potential energy of the car) + ( frictional energy) (distance) ​

Answer 1

Answer:

B

Explanation:

Answer 2

The equation is equal to the work done by the engine of the car will be  (change in kinetic energy of the car) - (friction energy) (distance).

What is the work-energy theorem?

From the work-energy theorem, It is stated that The net work done is equal to the change in the kinetic energy.

$\rm W_{net}=K_f-K_i$

The initial kinetic energy is $\rm K_I$

The final kinetic energy is $\rm K_f$

The equation equal to the work done by the engine of the car will be the subtraction of the change in kinetic energy of the car and the product of the frictional force and the distance.

$\rm W_{net}=K_f-K_i - F_f \times d$

Hence option B is correct.

To learn more about the work-energy theorem refer to the link;

https://brainly.com/question/16995910