Ask questions and get helpful answers.

A runner is jogging in a straight line at a steady vr= 7.7 km/hr. When the runner is L= 2.1 km from the finish line, a bird begins flying straight from the runner to the finish line at vb= 30.8 km/hr (4 times as fast as the runner). When the bird reaches the finish line, it turns around and flies directly back to the runner.

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩

1 answer

  1. runner's remaining time: 2.1/7.7 = 0.27 hours
    during that time, the bird flies 8.4 km

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Answer this Question

Related Questions

Still need help?

You can ask a new question or browse existing questions.