A passenger train travelled at an average speed of 72 km/h. A man on the passenger train observed a goods train, which was travelling at a speed of 54 km/h, in the on-coming direction. If the goods train passed him in 10 seconds, find the length of the goods train.
Is it possible to find the length of the passenger train as well in this situation?
u divide the two speeds and convert that to the right time.
Yes, it is possible to find the length of the passenger train as well in this situation.
To find the length of the goods train, we can first calculate the relative speed of the two trains. Since they are traveling in opposite directions, we can add up their speeds:
Relative speed = Speed of the passenger train + Speed of the goods train
= 72 km/h + 54 km/h
= 126 km/h
Next, we convert the relative speed to meters per second by multiplying it by 1000/3600 (since there are 1000 meters in a kilometer and 3600 seconds in an hour):
Relative speed = 126 km/h * (1000 m/3600 s)
= 35 m/s
Finally, we can use the formula:
Length of the goods train = Relative speed * Time
Length of the goods train = 35 m/s * 10 s
= 350 meters
So, the length of the goods train is 350 meters.
To find the length of the passenger train, we need additional information. Without any additional data, it is not possible to determine the length of the passenger train.