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A 1000-metre-long train crosses a 500-metre-long bridge. If the speed of train is 30 km/hr, then what is the time taken (in seconds) to cross the bridge?
- a)200
- b)150
- c)180
- d)120
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
A 1000-metre-long train crosses a 500-metre-long bridge. If the speed ...
We know that,
Distance = Speed × time
Total distance to travel = 1000 + 500 = 1500 m
Speed = 30 km/hr =30 × 5/18 = 25/3 m/s
Time taken = Distance/Speed = 1500/(25/3) = 180 second
Most Upvoted Answer
A 1000-metre-long train crosses a 500-metre-long bridge. If the speed ...
To find the time taken by the train to cross the bridge, we need to calculate the total distance the train needs to cover and divide it by the speed of the train.
- Given data:
- Length of the train = 1000 meters
- Length of the bridge = 500 meters
- Speed of the train = 30 km/hr
- Convert the speed of the train from km/hr to m/s:
- 30 km/hr = (30 * 1000) m/3600 s = 30000/3600 m/s = 8.33 m/s (approximately)
- Calculate the total distance the train needs to cover:
- The train needs to cover the length of the bridge plus its own length to cross the bridge completely.
- Total distance = Length of the bridge + Length of the train
- Total distance = 500 meters + 1000 meters = 1500 meters
- Calculate the time taken by the train to cross the bridge:
- Time = Distance / Speed
- Time = 1500 meters / 8.33 m/s (approximately)
- Time = 180 seconds
Therefore, the time taken by the train to cross the bridge is 180 seconds.
Hence, option C is the correct answer.
- Given data:
- Length of the train = 1000 meters
- Length of the bridge = 500 meters
- Speed of the train = 30 km/hr
- Convert the speed of the train from km/hr to m/s:
- 30 km/hr = (30 * 1000) m/3600 s = 30000/3600 m/s = 8.33 m/s (approximately)
- Calculate the total distance the train needs to cover:
- The train needs to cover the length of the bridge plus its own length to cross the bridge completely.
- Total distance = Length of the bridge + Length of the train
- Total distance = 500 meters + 1000 meters = 1500 meters
- Calculate the time taken by the train to cross the bridge:
- Time = Distance / Speed
- Time = 1500 meters / 8.33 m/s (approximately)
- Time = 180 seconds
Therefore, the time taken by the train to cross the bridge is 180 seconds.
Hence, option C is the correct answer.
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A 1000-metre-long train crosses a 500-metre-long bridge. If the speed of train is 30 km/hr, then what is the time taken (in seconds) to cross the bridge?a)200b)150c)180d)120Correct answer is option 'C'. Can you explain this answer?
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