Question
A bicycle racer sprints at the end of a race to clinch a victory. The racer has an initial velocity of 11.5 m/s and accelerates at the rate of $0.500 \textrm{ m/s}^2$ for 7.00 s. (a) What is his final velocity? (b) The racer continues at this velocity to the finish line. If he was 300 m from the finish line when he started to accelerate, how much time did he save? (c) One other racer was 5.00 m ahead when the winner started to accelerate, but he was unable to accelerate, and traveled at 11.8 m/s until the finish line. How far ahead of him (in meters and in seconds) did the winner finish?
1. $15.0 \textrm{ m/s}$
2. $5.27 \textrm{ s}$
3. $\Delta t = 4.2 \textrm{ s}$
$\Delta x = 49 \textrm{ m}$
Solution Video

# OpenStax College Physics Solution, Chapter 2, Problem 38 (Problems & Exercises) (11:35)

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