Two trains are travelling in opposite directions with speeds 25 m/secm/sec and 30 m/secm/secrespectively. If the length of one train is 300 m and that of the other train is 250 m, then find the time taken by the trains to cross each other.
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0
Answer:
10Sec
Explanation:
Va=25,Vb=30
As moving trains think as Va in +ve i^ direction and vB as negative i^ direction
Va-Vb =-5m/s , but speed is scalar quantity
can't be taken as negative so 5 m/s
L1=300 ,L2=250
Difference of both distance =50
Hence Speed =Distance /time
5=50/t
t=10Sec
Answered by
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Answer:
Time taken by the first train is 12 sec and second train is 8 10/30.
Explanation:
t = d/s
Speed of the first train = 25m /sec
Speed of the second train = 30m/ sec
Distance or length of first train = 300m
Distance or length of second train = 250m
Therefore time taken by the trains to cross each other =
Time taken by first train=
= d/s
= 300/25 sec
= 12 sec
Time taken by second train =
= 250/30 sec
= 8 10/30 sec
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