Chapter 5.7, Problem 38ES

In these exercises assume that the object is moving with constant acceleration in the positive direction of a coordinate line, and apply Formulas $\left(10\right)$ and $\left(11\right)$ as appropriate. In some of these problems you will need the fact that $88\text{ ft/s}=60\text{ mi/h}$ .

In the final sprint of a rowing race the challenger is rowing at a constant speed of $12\text{ m/s}$ . At the point where the leader is $100\text{ m}$ from the finish line and the challenger is $15\text{ m}$ behind, the leader is rowing at $8\text{ m/s}$ but starts accelerating at a constant $0.5{\text{ m/s}}^{\text{2}}$ . Who wins?