Question

a 150 M long train is moving with a uniform velocity of 45 km / hour the time taken to cross bridge of length 850 M is

Answer 1

Answer:

80 seconds

Step-by-step explanation:

45 kmph =12.5 m/s

total length discovered by train= 850 m +150m= 1000m

velocity= displacement/time

t=s/v

t=1000m/(12.5 m/s)

t= 80 seconds

time taken is 80 seconds

Answer 2

Answer:

80 seconds

Step-by-step explanation:

Length of train = 150 m

Length of bridge = 850 m

So, Total distance traveled by train=850 m+150 m

                                                         =1000 m

We are given that the velocity of train = 45 km/hr = 12.5 m/s

Formula :  $Velocity=\frac{Displacement}{time}$

Substitute the values in the formula

 $12.5=\frac{1000}{time}$

 $Time=\frac{1000}{12.5}$

 $Time=80$

Hence it will take 80 seconds to cross the bridge.