
Length of the train = 180 meters
Speed of the train = 42 km/h
Speed of the person = 6 km/h
Both are moving in the same direction
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✅ Step 1: Find relative speed
Since both are moving in the same direction, subtract their speeds:
Relative speed = 42 km/h – 6 km/h = 36 km/h
Now convert km/h to m/s:
36 × (1000 ÷ 3600) = 10 m/s
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✅ Step 2: Use the formula
Time = Distance ÷ Speed
= 180 m ÷ 10 m/s = 18 seconds
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✅ Final Answer: The train will take 18 seconds to pass the person.
a. (x+y)'=x'.y' b. (x'+y')'=x.y
c. (x'.y')'=x+y d. (x'+y')'=x'.y'
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