February 27, 2017

Homework Help: physics

Posted by sam on Wednesday, December 29, 2010 at 12:49am.

A runner is jogging steadily at 7.7km/hr. When the runner is 3.6km from the finish line, a bird begins flying from the runner to the finish line at 23.1km/hr (3 times as fast as the runner). When the bird reaches the finish line it turns around and flies back to the runner. How far does the bird travel? Assume that the bird occupies only one point in space and it can turn without loss of speed.

b) After this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. The bird repeats the back and forth trips until the runner reaches the finish line. How far does the bird travel from the beginning (including the first encounter)?


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