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An object is moving horizontally with no vertical movement, and it has a mass of 0.20 kg. Its potential energy function can be described as U(x) =...

An object is moving horizontally with no vertical movement, and it has a mass of 0.20 kg. Its potential energy function can be described as U(x) = (3.8 J/m²) x² — (2.1 J/m) x. What is the force on the object? What is the magnitude of the acceleration at x = 0.44 meters?

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