### Problem:

### The figure is the position-versus-time graph of a jogger.

### PART A. What is the jogger’s velocity at t = 10 s?

ANSWER: 1.3 m/sThe slope of the line from 0 to 20 is the constant velocity

### PART B. What is the jogger’s velocity at t = 25 s?

ANSWER: 0 m/sThe line is horizontal at this instant.

### PART C. What is the jogger’s velocity at t = 35 s?

ANSWER: -5.0 m/s