Question

Lucy is taking the train to see her lover on Valentine's day! The train is 100 meters long and it takes 30 seconds to cross a 400m bridge. What speed is the train going at?

Answer 1

Answer:

13.33 m/s

Explanation:

given

length of the bridge[s]=400m

time taken[t]=30 seconds

to find

velocity[speed]=?

solution

velocity=distance/time

=400/30

=13.33m/s

Answer 2

We are provided with the following hints in the question:

The length of the bridge or the distance covered = 400 metres

The time in which the train crossed it = 30 seconds

The length of the train doesn't really matter here.

Speed is defined as the distance covered by an object in the given time.

So, to find the speed of the train, we need to apply the formula:

Speed = distance/time

Putting the values:

400/30

We get the speed of the train

13.33 meter per second or 13.33 m/s