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A radio-controlled car increases its kinetic energy from 3 J to 10 J over a distance of 1 m. What was the average net force on the car during this interval?

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Answer:

Net force, F = 7 N

Step-by-step explanation:

It is given that,

Initial kinetic energy of the car,
K_i=3\ J

Final kinetic energy of the car,
K_f=10\ J

Distance, d = 1 m

We need to find the average net force on the car during this interval. It is given by using the work energy theorem as :


W=\Delta K


W=K_f-K_i

Also, W = F.d d = distance and F = net force


F.d=K_f-K_i


F=(K_f-K_i)/(d)


F=(10\ J-3\ J)/(1\ m)

F = 7 Newton

So, the average net force on the car during this interval is 7 newton. Hence, this is the required solution.

User MarkokraM
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