Answer
We can see the graph of x versus t in both cases.
(a) $v_{ave} = 1.74~m/s$
(b) $v_{ave} = 2.135~m/s$
Work Step by Step
We can see the graph of x versus t in both cases.
We can calculate the average velocity in part (a) as follows:
$v_{ave} = \frac{\Delta x}{\Delta t} = \frac{146.4~m}{84~s} = 1.74~m/s$
We can calculate the average velocity in part (b) as follows:
$v_{ave} = \frac{\Delta x}{\Delta t} = \frac{256.2~m}{120~s} = 2.135~m/s$
Note that the average velocity is the slope of the dotted blue line in each case.
