The figure below shows a plot of potential energy U versus position x of a .88 kg particle that can travel only along an x axis. (Nonconservative forces are not involved) In the graphs, the potential energies are Ua = 30.0 J, Ub = 55.0 J, and Uc = 75.0 J. The particle is headed in the positive x direction when it is released at x = 4.5m at speed 6.0m/s. (a) If the particle can reach x = 7.0m, what is the speed there, and if it cannot, what is its turning point? (b) What are the magnitude and direction of the force on the particle as it begins to move to the right of x = 5.0m?

The figure below shows a plot of potential energy U versus position x of a .88 kg particle that can travel only along an x axis. (Nonconservative forces are not involved) In the graphs, the potential energies are Ua = 30.0 J, Ub = 55.0 J, and Uc = 75.0 J. The particle is headed in the positive x direction when it is released at x = 4.5m at speed 6.0m/s. (a) If the particle can reach x = 7.0m, what is the speed there, and if it cannot, what is its turning point? (b) What are the magnitude and direction of the force on the particle as it begins to move to the right of x = 5.0m?

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