An 8.0 kg object is moving in the +x-axis direction. When it passes through x = 0, a constant force directed along the axis begins to act on it. Figure 1 gives its kinetic energy K versus position x as it moves from x = 0 to x = 5 m. The force continues to act. What is the speed of the object when it moves back through x = -3.0 m? O 2.7 m/s 7.5 m/s -2.7 m/s 3.5 m/s

An 8.0 kg object is moving in the +x-axis direction. When it passes through x = 0, a constant force directed along the axis begins to act on it. Figure 1 gives its kinetic energy K versus position x as it moves from x = 0 to x = 5 m. The force continues to act. What is the speed of the object when it moves back through x = -3.0 m? O 2.7 m/s 7.5 m/s -2.7 m/s 3.5 m/s