How long will a passenger sitting near the window of SGR train at a speed of 360km/h see a local train passing by in the opposite direction with a speed of 100km/h? The length of the local train is 315m.

Answer 1

To find the time it takes for the local train to pass the window of the SGR train, we need to calculate the relative speed between the two trains.

Relative speed = Speed of SGR train + Speed of local train = 360km/h + 100km/h = 460km/h

Convert the relative speed to meters per second:
460 km/h = (460 × 1000) m / (3600 s) = 460000 m / 3600 s ≈ 127.78 m/s

Now we can calculate the time it takes for the local train to pass the window using the formula:

Time = Distance / Relative speed

Plugging in the values,
Time = 315m / 127.78 m/s ≈ 2.464 seconds

Therefore, a passenger sitting near the window of the SGR train will see the local train passing by in approximately 2.464 seconds.