Question

A lady drove to the market at a speed of 8 km h–1. Finding market closed, she came back home at a speed of 10 km h–1. If the market is 2km away from her home, calculate the average velocity and average speed.

Answer 1

Average speed = $\frac{2+2}{\frac{2}{8}+\frac{2}{10}}$

= $\frac{4}{9}$ x 20

= 8.89 km $h^{-1}$,

average velocity = 0

Answer 2

Answer:

Average speed = \frac{2+2}{\frac{2}{8}+\frac{2}{10}}

= \frac{4}{9} x 20

= 8.89 km h^{-1},  

average velocity = 0