On a different planet, a rock is hurled from a volcano with an initial velocity of 136 meters per second. The following table gives the rock's height h in meters at t seconds. m (m) Part a) Find the average velocity of the rock over each of the given time intervals. If necessary, round to two decimal places. [2, 3] [2, 2.5] [2, 2.1] [2, 2.01[ [2, 2.001]