- A90 m/s
- B8.1 m/s
- C20 m/s
- D25 m/s
Step-by-Step Solution
Passing a signal, it covers its own length: m/s. (90 is the speed in km/h.)
Answer: D) 25 m/s
A 450 m train passes a signal in 18 seconds. What is its speed in m/s?
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