A bird is tossing (flying to and fro) between two cars moving towards each other on a straight road. One car has a speed of 18 m/h while the other has the speed of 27km/h. The bird starts moving from first car towards the other and is moving with the speed of 36km/h and when the two cars were separted by 36 km. What is the total distance covered by the bird? What is the total displacement of the bird?

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Answers

2015-06-08T07:13:03+05:30
Let time taken for both cars to meet each other be x hours
So, 18x + 27x = 36
or, 45x = 36
or, x = 0.8

So, total distance covered by car with speed 18 km/hr = 18 x 0.8 km = 14.4 km
So, displacement of bird = 14.4 km.
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