Question

a train passes over 400 metre long bridge if the speed of the train is 30ms^-1 and the train takes 20 seconds to cross the bridge the length of the train is​

Answer 1

Answer:

200 meter

Explanation:

S = V t

S = 30 × 20

 = 600 meter

the length of the train will be 600 - 400=200 meter

Answer 2

Let the length of train be L, so,

20 × 30 = L + 400

600 = L + 400

L = 200 m