How much time is required to cross one tree if it speed is 40km/ph and length of railway is 500 metre?
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total distance to cross=500m=0.5 km
speed=40km per hour
speed =d/t
40=0.5/t
t=0.5/40=0.0125hour =125/10000=1/80
to get answer in secs we would multiply the fraction by 3600 as 1 hr. is same as 3600secs.
(1/80)*3600
=45 seconds
speed=40km per hour
speed =d/t
40=0.5/t
t=0.5/40=0.0125hour =125/10000=1/80
to get answer in secs we would multiply the fraction by 3600 as 1 hr. is same as 3600secs.
(1/80)*3600
=45 seconds
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