course Phy 121 At clock time t = 7 sec, a ball rolling straight down a hill is moving at 6 m/s and is 47 m from the top of the hill. It accelerates uniformly at a rate of .6 m/s/s until clock time t = 17 sec. What is its velocity at this point and what is its average velocity during this time? How far is it from the starting point at t = 17 sec? .6m/s^2=deltaV/17s