Question

A train 250 m long passes a pole in 10 seconds. Ilow long willit take to overtake another train 200m long
moving in the same-direction at 72 km/h​

Answer 1

Answer:

Step-by-step explanation:

For pole :-

Time = 10 seconds

Distance = 250m (since it crosses the pole)

Speed = Distance/time

Speed = 250/10

speed = 25m/s

Now in case of bridge

t = 25seconds,

Speed = 25m/s

Distance = length of train + length of bridge

Also, distance travelled = Speed × time

=> 25 × 25 = 625metre

But we know that distance = length of train + length of bridge (since the train crosses the bridge, its own length will also be added to get distance)

=> 250 + length of bridge = 625

=> length of bridge = 625 - 250 = 375m

Length of bridge is 375m