Question

A passenger train 100 m long is moving with a uniform velocity 45 kmph . The time taken to cross a
stationary goods train of length 1 km is
a) 80s
b) 94 s
d) 78 s
c) 88 s​

Answer 1

Explanation:

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

d=1000m+100m=1100m

train speed = 45 km/hr = 45×

3600hr

1000m

=12.5m/s

so, time taken =

v

d

=

(12.5)

1100

=88s

Option - D is correct.