Question

a train 100m long is moving with a constant velocity of 60km/hr.find the time it takes to cross the bridge 1km long

Answer 1

Hello there !!

1 km = 1000 m

total distance = 100 m + 1000 , = 1100 m

speed  = 60 km /hr = 60 x 5/18 
                                = 16.66 m/s

time = distance / speed
  = 1100 / 16.66
  = 66.026 sec [ approx. ]

Answer 2

as we know
1km=1000m
D=100m+1000m=1100m
S=60km/hr=60x5/18=16.66m/s
T=D/S=1100/16.66=66.026sec


I HOPE IT WILL HELP YOU