- A25 s
- B12.5 s
- C10 s
- D90 s
Step-by-Step Solution
Opposite directions: relative speed = km/ m/s. Distance = m. Time = 10 s. (90 s would use the difference 10 km/)
Answer: C) 10 s
In the figure the two trains run on parallel tracks towards each other. How long do they take to cross each other completely?
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