Change the chapter
Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The front runner has a velocity of 3.50 m/s, and the second a velocity of 4.20 m/s. (a) What is the velocity of the second runner relative to the first? (b) If the front runner is 250 m from the finish line, who will win the race, assuming they run at constant velocity? (c) What distance ahead will the winner be when she crosses the finish line?
Question by OpenStax is licensed under CC BY 4.0.
Final Answer
  1. $0.70 \textrm{ m/s}$
  2. The second runner will finish first.
  3. $4.17 \textrm{ m}$
Solution Video

OpenStax College Physics Solution, Chapter 3, Problem 54 (Problems & Exercises) (4:26)

Sign up to view this solution video!

View sample solution

Calculator Screenshots

OpenStax College Physics, Chapter 3, Problem 54 (PE) calculator screenshot 1