A 100 m long train crosses a man traveling at 5km/h in opposite direction,in 7.2seconds then the velocity of train is
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Answered by
4
Solution:-
given by:-
length of train = 100 m
train crosses a man in time(t) = 7.2 s
both velocity =
man traveling velocity = 5km/h
Train's velocity = 12.5 m/s
■I HOPE ITS HELP■
given by:-
length of train = 100 m
train crosses a man in time(t) = 7.2 s
both velocity =
man traveling velocity = 5km/h
Train's velocity = 12.5 m/s
■I HOPE ITS HELP■
Answered by
6
Given conditions,
Velocity of the man = 5 km/hr = 1.38 m/s.
Length of the Train (or Distance) = 100 m.
Time = 7.2 seconds.
Let the velocity of the train be v m/s.
∴ Relative Velocity = Speed of the train + Speed of the man
= v + 1.38
∵ Relative Velocity = Length of the Train/Time taken
∴ v + 1.38 = 100/7.2
⇒ 7.2v + 9.936 = 100
⇒ 7.2v = 90.064
∴ v = 12.5 m/s. = 45.03 km/hr.
Hence the velocity of the train is 12.5 m/s or 45.03 km/hr.
Hope it helps.
Velocity of the man = 5 km/hr = 1.38 m/s.
Length of the Train (or Distance) = 100 m.
Time = 7.2 seconds.
Let the velocity of the train be v m/s.
∴ Relative Velocity = Speed of the train + Speed of the man
= v + 1.38
∵ Relative Velocity = Length of the Train/Time taken
∴ v + 1.38 = 100/7.2
⇒ 7.2v + 9.936 = 100
⇒ 7.2v = 90.064
∴ v = 12.5 m/s. = 45.03 km/hr.
Hence the velocity of the train is 12.5 m/s or 45.03 km/hr.
Hope it helps.
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