AAMC Practice Test 3 B/B #4

[xoxo111]

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Why is the answer A and not C?

I picked C because I was thinking of it in a mathematical way:

It was given that: work= force x distance; power= force x velocity
Therefore, power= (work/distance) x velocity (from the work equation I separated force=work/distance)
So with that in mind, Work= (Power x distance)/ velocity

So shouldn't it be that the larger the value of velocity, the smaller the work since velocity is in the denominator?

 

[Matthew9Thirtyfive]

Too much algebra can be confusing.

Power = work/time
Power = Fv
Work/time = Fv
Work= Fv*time

So you want the smallest force and the lowest velocity.