- A3 s
- B6 s
- C15 s
- D9 s
Step-by-Step Solution
Relative speed m/s. Full crossing: s. (3 s uses only the shorter train.)
Answer: D) 9 s
Trains 300 m and 150 m long pass each other in opposite directions. A passenger in the shorter train sees the longer one go past his window in 6 seconds. How long do the two trains take to cross each other completely?
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