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The only force acting on a 2.40-kg body as it moves along a positive x axis...

The only force acting on a 2.40-kg body as it moves along a positive x axis has an x component Fx = -5.10x N, with x in meters. The velocity at x = 5.16 m is 10.0 m/s.
What is the velocity of the body at x = 2.89 m?

At what positive value of x will the body have a velocity of v = 4.91 m/s?

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