The displacement (in meters) of an object moving in a straight line is given by $\displaystyle s=1+2t+\frac{t^2}{4}$ where t is measured in seconds.

Use to find average velocity:

$\displaystyle \lim_{h\to0}\frac{f(a+h)-f(a)}{h}$

1) Find average velocity over each time period.

a) [1,3]

b)[1,2]