a train 120 metr
es long passes a telegraph pole in 5seconds . how long will it take to cross railway platform in 180 metres long
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speed = distance travelled/ time
1)speed =length of the train /time =120/5=24m/s
2)time =d/t
=(length of the train+180)/24
=(120+180)/24
=300/24
=12.5 sec
1)speed =length of the train /time =120/5=24m/s
2)time =d/t
=(length of the train+180)/24
=(120+180)/24
=300/24
=12.5 sec
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