A runner begins running at a steady pace on a at path. She speeds up as she starts to run downhill. Once she is at the bottom of the hill, the path is at again, and she resumes a steady pace faster than her previous steady pace. Her run ends with an uphill path, on which she runs slower and slower until she stops at the top of the hill. Sketch a graph of the runner's speed versus time.
A)
B)
C)
D)
E)

Question

​A runner begins running at a steady pace on a at path. She speeds up as she starts to run downhill. Once she is at the bottom of the hill, the path is at again, and she resumes a steady pace faster than her previous steady pace. Her run ends with an uphill path, on which she runs slower and slower until she stops at the top of the hill. Sketch a graph of the runner's speed versus time.
A) ​ 
B) ​ 
C) ​ 
D) ​ 
E) ​

Quizplus · Accepted Answer

The graph should start with a flat line indicating a steady pace, then decrease as she speeds up downhill, reach a minimum at the bottom of the hill, then increase again to a faster steady pace once the path levels out, and finally decrease as she runs slower and slower uphill until she stops at the top. The only option that matches this description is C.

​A Runner Begins Running at a Steady Pace on a at Path

A Runner Begins Running at a Steady Pace on a at Path