Question

Heather and Matt take 34 minutes to walk eastward along a straight road to a store 2.0km away. What is their average velocity in m/s

Answer 1

Answer:

0.98 m/s eastward

Explanation:

The average velocity is defined as:

$v=\frac{d}{t}$

where

d is the displacement

t is the time taken to do the displacement

Here the displacement of Heather and Matt is

d = 2.0 km = 2000 m

While the time interval is

$t =34 min \cdot 60 =2040 s$

So, their average velocity is

$v=\frac{2000}{2040}=0.98 m/s$

and the direction is the same as the displacement (eastward).