O GRAPHS AND FUNCTIONS Hann Word problem involving average rate of change 15 Henry launches a rocket straight up into the air. The table below gives the height H/ () of the rocket (in meters) at a few times / (in seconds) during its flight. Time Height H (t) (seconds) (meters) 0 0 2.3 92 4.6 138 9.2 23 11.5 0 (a) Find the average rate of change for the height from 0 seconds to 4.6 seconds. [ meters per second (b) Find the average rate of change for the height from 9.2 seconds to 11.5 seconds. meters per second X 5