a train running at the speed of 60 km/hr crosses a pole in 9 seconds. what is the length of the train?
To find the length of the train, we can use the formula:
Length of the train = Speed of the train * Time taken to cross the pole
Given that the speed of the train is 60 km/hr and it crosses a pole in 9 seconds, we need to convert the speed from km/hr to m/s to ensure the units are consistent.
First, let’s convert the speed from km/hr to m/s:
1 km = 1000 m
1 hr = 3600 seconds
So, 60 km/hr = (60 * 1000) / 3600 m/s
= 60000 / 3600 m/s
≈ 16.67 m/s (rounded to 2 decimal places)
Now, we can calculate the length of the train using the formula:
Length of the train = Speed of the train * Time taken to cross the pole
= 16.67 m/s * 9 seconds
≈ 150 meters (rounded to the nearest meter)
Therefore, the length of the train is approximately 150 meters.