Exercise 16

Several applied functions are given below. In each case, find the indicated quantity (including unit) and interpret the value in the context of the application.

The acceleration of a rocket (mph/s) is given by $\fe{a}{t}=0.02+0.13t$ where $t$ is the amount of time (s) that has passed since lift-off. Find and interpret $\frac{\fe{a}{120}-\fe{a}{60}}{120-60}$.