Question

10. Find the time taken by an express train of length 450 m having speed of 86 km/h, to ou train of length 675 m having speed 32 km/h, if the express train was behind the ge parallel track in the same direction, 29 ​

Answer 1

Answer:

The time taken by an express train is 75 second.

Step-by-step explanation:

For Train -A

Length = 450 m

speed= $86km/s=24m/s$

For Train -B

Length=675 m

Speed=$32km/h=9m/s$

Due to motion in same direction Net speed=$24-9=15 m/s$

Total distance to be travelled to cross each other =$450+675=1125 m$

Time taken=$\frac{1125}{15} \\ \\ =75 second$