A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?120 metres180 metres324 metres150 metres
Question
A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?
- 120 metres
- 180 metres
- 324 metres
- 150 metres
Solution
To find the length of the train, we need to use the formula:
Speed = Distance/Time
We know the speed of the train is 60 km/hr and it crosses a pole (which can be considered as a point) in 9 seconds.
First, we need to convert the speed from km/hr to m/s by multiplying it by 5/18.
So, 60 km/hr = 60 * (5/18) = 16.67 m/s
Now, we can find the distance (which is the length of the train in this case) by rearranging the formula:
Distance = Speed * Time
So, the length of the train = 16.67 m/s * 9 s = 150 metres
So, the length of the train is 150 metres.
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