A train 360m long is running at 80km/hr.It crosses a bridge in 45 seconds.Find the length of the bridge.
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Step-by-step explanation:
Formula for converting from km/hr to m/s = X km/hr=(X×
18
5
)m/s
Therefore,
Speed=(45×
18
5
)m/sec=
2
25
m/sec
Total distance to be covered =(360+140)m=500m.
Formula for finding time =(
Speed
Distance
)
∴ Required Time =(
25
500×2
)sec=40sec.
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