Basics Of Problems on Train
km/hr to m/s conversion:
a km/hr = a x (5 / 18) m/s.
m/s to km/hr conversion:
a m/s = a x (18 / 5) km/hr.
Time taken by a train of length l metres to pass a pole or standing man or a signal post is equal to the time taken by the train to cover l metres.
Time taken by a train of length l metres to pass a stationery object of length b metres is the time taken by the train to cover (l + b) metres.
Suppose two trains or two objects bodies are moving in the same direction at u m/s and v m/s, where u > v, then their relative speed is = (u - v) m/s.
Suppose two trains or two objects bodies are moving in opposite directions at u m/s and v m/s, then their relative speed is = (u + v) m/s.
If two trains of length a metres and b metres are moving in opposite directions at u m/s and v m/s, then:
The time taken by the trains to cross each other = (a + b)/(u + v) sec.
If two trains of length a metres and b metres are moving in the same direction at u m/s and v m/s, then:
The time taken by the faster train to cross the slower train = (a + b)/(u - v) sec.
Objective Question on Problems On Train
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Two trains are moving in opposite directions @60 Km/hr and 90 Km/hr. Their Lengths are 1.10 km and 0.9 Km respectively. The time taken by the slower train to cross the faster train in seconds is :
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Two trains are running in opposite directions with the same speed. If the length of each train is 120 metre and they cross each other in 12 seconds, then the speed of each train ( in Km/hr ) is :
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Two trains of equal lengths take 10 Seconds and 15 seconds respectively to cross a telegraph post. If the length of each train be 120 metre, in what time ( in Seconds ) will they cross each other travelling in opposite direction?
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A train 108 meter long moving at the speed of 60 Km/hr crosses a train 112 m long coming from opposite direction in 6 seconds. The speed of the second train ?
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A train X speeding with 120 kmph crosses another train Y, running in the same direction, in 2 minute. If the lengths of the train X and Y be 100 m and 200 m respectively. What is the speed of train Y?
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Two trains, each 100 metre long, moving in opposite directions, cross each other in 8 seconds. If one is moving twice as fast the other , then the speed of the faster train is?
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A train 150 m long passes a Km stone in 15 seconds and another train of the same length travelling in opposite directions in 8 seconds. The speed of the second train is?
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A train X starts from Meerut at 4 pm and reaches Ghaziabad at 5 PM. While another train Y starts from Ghaziabad at 4 PM and reaches Meerut at 5.30 PM. The two train will cross each other at :
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