1.

A train 100 m long is moving with a speed of 60kmh^(-1). In how many seconds will it cross a bridge of 1 km long?

Answer»

SOLUTION :Total distance to be covered `=1km+100m=1100m` (including both BRIDGE and time)
Then, Speed `=60kmh^(-1)=60xx(5)/(18)MS^(-1)=(50)/(3)ms^(-1)`
Then, time taken to COVER this distance `(1100)/(150//9)s=66s`


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