Question

a train 100
M long is moving with a constant velocity of 60 kilometre per hour and the time it takes to cross the bridge 1 km long

Answer 1

PLEASE MARK AS BRAINLIEST IF HELPFUL
distance=1.1km
time=1.1/60 hrs=11/600 hrs=66 seconds

Answer 2

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. ]