Question

A train travels 55 km, south along a straight track in 34 minutes.
What is the train's average velocity in kilometers per hour?

Answer 1

Answer:

96.5 km/h south

Explanation:

The average velocity is given by:

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

where

d is the displacement

t is the time

We have:

d = 55 km

$t = 34 min \cdot \frac{1}{60}=0.57 h$

Therefore, the average velocity is

$v=\frac{55}{0.57}=96.5 km/h$

And the direction is the same as the  displacement (south)