Question

a train 100 m long is moving with the speed 72 km/hr .find the time it takes to cross the bridge which is 2km long ​

Answer 1

Answer:

105sec

Explanation:

Velocity of train V = 72 k/h

Now converting velocity in m/s

V = 72*1000/3600 = 20 m/s

Total Distance = Bridge length + Train length

= 2 km + 100 m = 2000 m + 100 m

= 2100 m

Time = distance / velocity

Time = 2100/20= 105 sec

Hence the time to cross the bridge is 105 seconds