Question

A train 360 m long is running at a speed of 60 km / hr . what time will it take to cross a bridge 140 m long​

Answer 1

Answer:

Formulaforconvertingfromkm/hrtom/s:Xkm/hr=X×518m/sTherefore,Speed=45×518m/sec=252m/secTotaldistancetobecovered=(360+140)m=500mFormulaforfindingTime=DistanceSpeed∴Requiredtime=(500×225)sec=40sec.

Answer 2

Explanation:

Speed = 45 Km/hr = 45*(5/18) m/sec
= 25/2 m/sec
Total distance = 360+140 = 500 meter
Time = Distance/speed
= 500*\frac{2}{25} = 40 seconds