A mechanic pushes a 3.50 ✕ 103-kg car from rest to a speed of v, doing 5,130 J of work in the process. During this time, the car moves 26.0 m. Neglecting friction between car and road, find v and the horizontal force exerted on the car.(a) the speed v m/s =(b) the horizontal force exerted on the car (Enter the magnitude.)

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Asked Nov 14, 2019
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A mechanic pushes a 3.50 ✕ 103-kg car from rest to a speed of v, doing 5,130 J of work in the process. During this time, the car moves 26.0 m. Neglecting friction between car and road, find v and the horizontal force exerted on the car.

(a) the speed v
 m/s =

(b) the horizontal force exerted on the car (Enter the magnitude.)
 
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Expert Answer

Step 1

a)

The expression for work is

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1 mv 2

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Step 2

Substitute the values in the above expression and solve for v

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1 5130J3500x2 v-1.71m/s

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Step 3

b)

The expression for w...

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W F.d

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Work,Power and Energy

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