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A train 120m long moving on a straight and level track with uniform speed passes a pole in 6 seconds. Find the time it will take to cross a 50 m long bridge.
- a)8.5 second
- b)9.5 second.
- c)9 second
- d)8 second
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
A train 120m long moving on a straight and level track with uniform sp...
The speed of train = 120 m /6 = 20 m/s.
Time taken to cross a 50 m long bridge = (120 m + 50 m)/20 = 170/20 = 8.5 second.
Most Upvoted Answer
A train 120m long moving on a straight and level track with uniform sp...
Given:
- Length of the train = 120 m
- Time taken to pass a pole = 6 seconds
- Length of the bridge = 50 m
To find:
The time it will take to cross the bridge.
Concept:
To find the time taken to cross the bridge, we need to consider the total distance covered by the train. The train needs to cover the length of the bridge as well as its own length.
Calculation:
1. Total distance covered by the train to cross the pole:
- Length of the train = 120 m
- Time taken = 6 seconds
- Speed of the train = Distance/Time = 120/6 = 20 m/s
2. To find the time taken to cross the bridge, we need to calculate the total distance covered by the train.
- Distance covered by the train to cross the pole = 120 m
- Distance covered by the train to cross the bridge = 50 m
- Total distance covered by the train = 120 m + 50 m = 170 m
3. Time taken to cross the bridge:
- Speed of the train = Distance/Time
- Time = Distance/Speed = 170/20 = 8.5 seconds
Therefore, the correct answer is option 'A' - 8.5 seconds.
- Length of the train = 120 m
- Time taken to pass a pole = 6 seconds
- Length of the bridge = 50 m
To find:
The time it will take to cross the bridge.
Concept:
To find the time taken to cross the bridge, we need to consider the total distance covered by the train. The train needs to cover the length of the bridge as well as its own length.
Calculation:
1. Total distance covered by the train to cross the pole:
- Length of the train = 120 m
- Time taken = 6 seconds
- Speed of the train = Distance/Time = 120/6 = 20 m/s
2. To find the time taken to cross the bridge, we need to calculate the total distance covered by the train.
- Distance covered by the train to cross the pole = 120 m
- Distance covered by the train to cross the bridge = 50 m
- Total distance covered by the train = 120 m + 50 m = 170 m
3. Time taken to cross the bridge:
- Speed of the train = Distance/Time
- Time = Distance/Speed = 170/20 = 8.5 seconds
Therefore, the correct answer is option 'A' - 8.5 seconds.
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A train 120m long moving on a straight and level track with uniform speed passes a pole in 6 seconds. Find the time it will take to cross a 50 m long bridge.a)8.5 secondb)9.5 second.c)9 secondd)8 secondCorrect answer is option 'A'. Can you explain this answer?
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A train 120m long moving on a straight and level track with uniform speed passes a pole in 6 seconds. Find the time it will take to cross a 50 m long bridge.a)8.5 secondb)9.5 second.c)9 secondd)8 secondCorrect answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about A train 120m long moving on a straight and level track with uniform speed passes a pole in 6 seconds. Find the time it will take to cross a 50 m long bridge.a)8.5 secondb)9.5 second.c)9 secondd)8 secondCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A train 120m long moving on a straight and level track with uniform speed passes a pole in 6 seconds. Find the time it will take to cross a 50 m long bridge.a)8.5 secondb)9.5 second.c)9 secondd)8 secondCorrect answer is option 'A'. Can you explain this answer?.
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