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Two trains each of length 100 m moving parallel towards each other at speed 72km/h and 36km/h respectively. In how much time will they cross each other
Two trains each of length 100 m moving parallel towards each other at speed 72km/h and 36km/h respectively. In how much time will they cross each other

```
5 years ago

Latika Leekha
165 Points
```							Hello student,Both the trains are of lenght 100m.Hence, total distance = 100 + 100 = 200 mRelative speeds = 72 + 36 = 108 km/h = 108. 1000/ 3600 m/s = 30 m /sHence, time taken = Distance/ Speed = 200/ 30 = 6.67 sec
```
5 years ago
vansh chaudhary
36 Points
```							since the question states that train are running towards eah other that means their relative speed will be diffrence b/w them.hence, relative speed = 72-36= 36 km/hr = 36 *(5/18) = 10m/secnow time taken= dist/speed200/10​=20 secs
```
2 years ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions