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A particle with mass 2.55 kg is moving in one dimension subject to a potential energy function that is a 4th-order polynomial.
There are equilibrium points at x = -2 m, x = 1 m, and x = 3 m. The potential energy is zero at the origin. When the particle
is located at x = -2 m, it has a potential energy of 22.3 J and is moving with a speed of 5.4 m/s.
What is the speed of the particle when it is located at x = 2 m?
m/s

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