A train of length 500 meters is running at a speed of 36km/hr will cross a bridge of length 500 meters in how many seconds?
Question
A train of length 500 meters is running at a speed of 36 km/hr.
It will cross a bridge of length 500 meters in how many seconds?
Solution
Step 1: Convert speed from km/hr to m/s We know that 1 km = 1000 m and 1 hr = 3600 s. So, to convert km/hr to m/s, we multiply by 1000/3600 = 5/18. So, 36 km/hr = 36 * (5/18) = 10 m/s.
Step 2: Find the total distance to be covered The train has to cover the distance equal to the length of the train and the length of the bridge to completely cross the bridge. So, total distance = length of train + length of bridge = 500 m + 500 m = 1000 m.
Step 3: Calculate the time taken We know that time = distance/speed. So, time taken to cross the bridge = total distance / speed = 1000 m / 10 m/s = 100 seconds.
So, the train will cross the bridge in 100 seconds.
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