A child attaches a rubber ball to a string and whirls it around in a circle overhead. If the string is 0.2 m long and the ball's speed is 16 m/s, what is the ball's centripetal acceleration?
_______ m/s2
i got 100 but it turn out wrong
ac = v2/r = ( 16^2) / .2 = 1280 m/s2
