Question

? A goods train is travelling at 60 km per hour.

How long will it take for the train driver to pass
through a tunnel 2 km long?

Answer 1

• 2 minutes

Explanation:

The train driver is moving at same speed as the train:

• s = 60 k/h

The distance is:

• d = 2 km

Find the time:

• t = ?

Use distance formula:

• d = st
• t = d/s
• t = 2 / 60 hr = 2 min