A train running at the speed of 82 km/hr crosses a pole in 14 seconds. What is…
2025
A train running at the speed of 82 km/hr crosses a pole in 14 seconds. What is the length of the train?
- A.
318 m
- B.
322 m
- C.
319 m
- D.
325 m
Attempted by 26 students.
Show answer & explanation
Correct answer: C
Solution:
Step 1 — Convert speed to metres per second: 82 km/h = 82 × 5/18 = 205/9 ≈ 22.78 m/s.
Step 2 — Use length = speed × time. Time = 14 s, so length = (205/9) × 14 = 2870/9 ≈ 318.888... m.
Step 3 — Round to the nearest metre: 2870/9 ≈ 318.888... m ≈ 319 m.
Answer: Approximately 318.89 m, which rounded to the nearest metre is 319 m.