Question

The table below shows the distance d(t) in meters that an object travels in t seconds:

t
(seconds) d(t)
(meters)
3
126
4
224
5
350
6
504


What is the average rate of change of d(t) between 3 seconds and 5 seconds, and what does it represent?

Answer 1

average change in d(t) = (350-126) / (5-3) = 112 m/s

This represents the average speed of the object during the 2 second period between t = 3 and t = 5.