Question
Download Solution PDFA goods train 350 m long passes through a tunnel of 1250 m in 80 seconds. What is the speed of the train?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Length of the train (Lt) = 350 m
Length of the tunnel (Ltu) = 1250 m
Total distance (D) = Lt + Ltu = 350 m + 1250 m = 1600 m
Time (T) = 80 seconds
Formula used:
Speed (S) = Total distance (D) / Time (T)
Calculation:
S = D / T
⇒ S = 1600 m / 80 s
⇒ S = 20 m/s
To convert m/s to km/h, multiply by 18/5
⇒ S = 20 × 18/5 km/h
⇒ S = 72 km/h
∴ The correct answer is option (4).
Last updated on Jun 3, 2025
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