A 200m long train crosses a 400m long bridge with a speed of 36km/hr . Calculate the time taken by train to cross the bridge?
The train must go 600m to clear the bridge. Think on that.
distance=velocity*time
solve for time. I recommend you change 36km/hr to m/s
To calculate the time taken by the train to cross the bridge, we need to find the total distance that the train needs to travel.
The train needs to cross the 400m long bridge completely. In addition to that, we need to consider the length of the train itself, which is given as 200m.
So, the total distance the train needs to travel is the sum of the length of the train and the length of the bridge: 400m + 200m = 600m.
The speed of the train is given as 36km/hr. To calculate the time taken, we need to convert this speed from kilometers per hour to meters per second.
To convert the speed from kilometers per hour to meters per second, we need to multiply the speed by 1000/3600, since there are 1000 meters in a kilometer and 3600 seconds in an hour.
So, the speed of the train in meters per second is: 36 km/hr * (1000m / 3600s) = 10 m/s.
Now, we can calculate the time taken by the train to cross the bridge by dividing the total distance by the speed of the train:
Time = Distance / Speed = 600m / 10m/s = 60 seconds.
Therefore, the time taken by the train to cross the bridge is 60 seconds.