Question

a passenger train 100m long is moving with uniform velocity 45 kmph. The time taken tocross a stationary goods train of length Ikm is​

Answer 1

Answer:

88seconds

Explanation:

speed=distance/time

Length to covered by train = bridge length + its own length

d=1000m+100m=1100m

train speed = 45 km/hr = 45×3600hr1000m=12.5m/s

so, time taken = vd=(12.5)1100=88s

Answer 2

Explanation:

45km/h = 12.5m/s

Length of goods train = 1000 m

speed = distance/ time

time = 1000/12.5

=80sec

Now for crossing 1000 m , it takes 80 sec,

so for 100m( passenger train)

it will take 8 sec

so total time taken= 88 sec