Question

Its takes 45 N to make a 10.0 kg cart move at a constant speed. What force does it take to make the cart accelerate at 3.2 m/s^2 in the direction it is moving ?

Answer 1

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Answer 2

F1=F(fr).
ma=F2-F(fr)=F2-F1,
F2 =ma+F1 =10•3.2+45=77 N