posted by KKK on .
Two trains, each having a speed of'34 km,/h, are headed at each other on the same straight track. A bird that can ﬂy 58 km /h ﬂies oﬁ" the front of one train when they are 102 kmapart and heads directly for the other train. On reaching theother 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 thebird travels?