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Solve the Problem rr (In mm ), the Force ff (In Newtons) Is Given By

Question 73

Multiple Choice

Solve the problem.
-A force acts on a certain object in such a way that when the object has moved a distance of rr (in mm ) , the force ff (in newtons) is given by f=2r2+2rf=2 r^{2}+2 r . Find the work (in joules) done through the first four meters.


A) 64 J64 \mathrm{~J}
B) 40 J40 \mathrm{~J}
C) 44.7 J44.7 \mathrm{~J}
D) 58.7 J58.7 \mathrm{~J}

Correct Answer:

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