Bird & Trains: Calculating Distance & Speed

[zaske.014]

using instantaneous vs. velocity/speed

Two trains, each having a speed of 34 km/h, are headed at each other on the same track. A bird that can fly 58 km/h flies off the front of one train when they are 102 km apart and heads directly for the other train. On reaching the other train it flies directly back to the first train, and so forth.

(a) How many trips can the bird make from one train to the other before they crash?

(b) what is the total distance traveled by the bird?

this is the image that i make...

http://www.soulroph.somee.com/trains[/URL] and bird.bmp[/PLAIN]

please help me to solve this kind of problem...

Thanks...

 

[Kurdt]

It is the policy of this forum that you make some attempt at the problem yourself before anyone can help. Please show what you've attempted so far.