Question

A train of length 200m is going towards north at a speed of 15 m/s. A bird is flying at 5m/s parallel to the track towards south. The time taken by the bird to cross the train is

Answer 1

Answer:

Explanation:

Given,

A train of length 200m is going towards north at a speed of 15 m/s.

A bird is flying at 5m/s parallel to the track towards south.

To Find,

Time taken, t

Formula to be used,

Time taken = Time taken/Relation velocity of bird with respect to train

Solution,

Relative velocity of bird w.r.t train = 15 - (- 5) = 15 + 5 = 20 m/s

Putting all the values, we get

Time taken = Time taken/Relation velocity of bird with respect to train

Time taken = 200/20

Time taken = 10 seconds

Hence, the time taken by the bird to cross the train is 10 seconds.

Answer 2

Explanation:

time taken =10 seconds

hope it helps !