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

96.5 km/h south

Step-by-step explanation:

The average velocity is given by:

`v=(d)/(t)`

where

d is the displacement

t is the time

We have:

d = 55 km

`t = 34 min \cdot (1)/(60)=0.57 h`

Therefore, the average velocity is

`v=(55)/(0.57)=96.5 km/h`

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