A 180 metre long train is moving due north at a speed of 25 m/s. A
small bird is flying due south, a little above the train, with a speed of
5 m/s. The time taken by the bird to cross the train is
Answers
Answered by
25
Answer:
6 seconds.
Explanation:
Given,
- Speed of a train due to north 25m/s
- Speed of the flying due to south 5m/s
Here, both the bodies are moving towards each other.
So, the relative speed is -
= sum of thier speed
= 25 + 5
= 30m/s
Now, time taken by the bird to cross the the train is given by :-
= distance/speed
Where, the distance will be the length of the train i.e., 180metres and speed is 30m/s
So,
= 180/30
= 6 seconds
Hence, the time taken by the bird to cross the train is 6 seconds.
_____________________
Relative speed :- When two bodies moves towards each other then, the relative speed is sum of thier speeds.
Formula used :
- Speed = Distance/Time
Answered by
1
Answer:
6 seconds
Explanation:
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