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A force in the +x-direction with magnitude F(x)=18.0N−(0.530N/m)x is applied to a 5.60 kg box that...

A force in the +x-direction with magnitude F(x)=18.0N−(0.530N/m)x is applied to a 5.60 kg box that is sitting on the horizontal, frictionless surface of a frozen lake. F(x) is the only horizontal force on the box.

If the box is initially at rest at x=0x=0, what is its speed after it has traveled 12.0 mm ?

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