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- A train is moving at a speed of 132 km/h
- A train 240 meter long passed a pole in 24 seconds
- A train 360 meter long is running at a speed of 45 km/h
- A train 280 meter long, running with a speed of 63 km/h
- A train 100 meter long is running at the speed of 30 km/h
- Two trains of equal lengths take 10 seconds and 15 seconds
- How long does a train 110 metres long running at the speed
- Two trains 140 and 160 meter long runs at a speed of 60km/h
- In what time will a train 100 meters long cross an electric pole
- How many seconds will a 500 meter long train take to cross a man

## Explanation

A jogger running at 9km/h in the direction of train so relative speed will be determined by subtracting 9 from 45 km/h.

Jogger is 240 meter ahead so

Total distance = 240 + length of the train = 240 + 120 = 360

Time = Distance/Speed

## To Find

Time = ?

## Solution

Relative speed = 45 km/h – 9 km/h

Relative speed = 36 km/h

Now, to change it into m/sec;

Relative speed = (36 x 1000)/3600

Relative speed = 10 m/sec

Total distance = 240 + 120 = 360 m

Now,

Speed = Distance/Time

Time = Distance/Speed

Time = 360/10

**Time = 30 seconds answer**

### Conclusion

A jogger running at 9km/h alongside a railway track is 240 meter ahead of the engine of a 120 meter long train running at 45km/h in the same direction. In **30 seconds** train will pass the jogger.