Aball on the end of a string is whirled around in a horizontal circle of radius 0.273 m. the plane of the circle is 1.31 m above the ground. the string breaks and the ball lands 2.87 m away from the point on the ground directly beneath the ball’s location when the string breaks. the acceleration of gravity is 9.8 m/s 2 . find the centripetal acceleration of the ball during its circular motion. answer in units of m/s 2