A one-dimensional variable force in the x-direction is given as F(x) = 2 x 2.4i where Fis in newtons and x is in meters. The net work is done by this force as the object of mass m=2.5kg moves from x; = 0.55 to xf=2.52. If the speed of the particle at x; is v; =3m/s, find the speed vf at xf. Round your answer to one decimal place.

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