Moderate# Average Rate of Change —Word Problem

GRE-RE9GLB

A ball is thrown upwards; its height above the ground is expressed as:

$$h(t)=-2{ t }^{ 2 }+12t+32$$

...where $h(t)$ is its height in feet, and $t$ is the number of seconds after it was thrown. What is the average rate of change of the ball's height during the first 2 seconds it was thrown?