Discuss Forum
1. Two trains are running on parallel lines in the same direction at a speed of 50 km/hr and 30 km/hr respectively. The faster train crosses a man sitting in the slower in 18 seconds. What is the length of the faster train?
- A. 170 m
- B. 170 m
- C. 170 m
- D. 170 m
Answer: Option C
Explanation:
Hints: আপেক্ষিক বেগ ( 50 - 30) km/hr = 20 km/hr
= 20000m/3600s
3600 সেকেন্ডে যায় 20000 মিটার
18 সেকেন্ডে যায় ( 20000×18)/3600 = 100 মিটার
Post your comments here: