Question
Download Solution PDFMan observed that a train 120 m long crossed him in 9 seconds. The speed (in km/hr) of the train was:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Length of the train = 120 m
Time taken to cross a man = 9 seconds
Formula Used:
Speed = Distance / Time
To convert m/s to km/hr: Speed (in km/hr) = Speed (in m/s) × 18/5
Calculation:
Speed (in m/s) = 120 / 9
⇒ Speed (in m/s) = 13.33 m/s
Speed (in km/hr) = 13.33 × 18 / 5
⇒ Speed (in km/hr) = 240 / 5
⇒ Speed (in km/hr) = 48 km/hr
The speed of the train is 48 km/hr.
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