The rocket problem

Question

The height (h) in feet of a model rocket is given by the function h(t) = -16t^2 + 230t + 5 where t (time) is measured in seconds. Calculate the average rate of change in the height of the rocket between 2 and 6 seconds. Be sure your answer has the appropriate label. Round to tenths.

Answer 1

calculate h(6) = 809 feet and h(2)=861 feet .. the avg speed = ((h(6)-h(2))/(6-2)=-13 feet/sec

Answer 2

(h(6) - h(2))/(6 - 2) = [(-16·36 + 230·6 + 5) - (-16·4 + 230·2 + 5)]/4 = 102 ft/s