A ball of mass 0.40 kg is attached to a light rope of length 1.0 m. The ball is moving in a vertical circle, as shown in the figure, with Earth's gravitational force as the only force external to the ball-string system. The speed of the ball at point P is 5.4 m/s. The centripetal acceleration of the ball at point P is most nearly5.4 m/s9.8 m/s29.2 m/s39.2 m/s