Question

Two trians of each having a speed of 30km/hr are headed at each other in opposite direction the same track .A bird flies off one trian to another with a constant speed of 60 km/hr when they are 60km apart till before crash .Find distance covered by bird and how many trips the bird can make frome one trian to the other before they crash ?????? explain with steps

Answer 1

Given ;-

Speed of the two trains when they are headed in the same track = 30 km / hr

Speed of the bird when it flies off the front of one train = 60 km / hr


To find ;-

⇒ What is the total distance the bird travels before the trains collide?

Sol ;-

Let us take the speed of one train as V₁ and the speed of another train as V₂

Now, Let us take the total distance between the to trains as - x = 60 km

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⇒ Time taken to collide each other
= ( V 1 + V 2 ) / X

= ( 30 + 30 ) / 60

= 60 / 60

= 60 min = 1hr



Time taken to collide each other = 1 hr
Time taken for the Bird Flight is = 1 hr
Now let us find the total distance by the bird -

Total distance travelled by the bird = Speed of the bird × Time of the birds before the trains collide flight


= 60 × 1 = 60 km
So , total distance of the
bird before the trains collides =60km