Chapter 4.1, Problem 20PPE

To determine

To graph: a line that could represent the vertical distance travelled as person C rides the escalator standing still.

Answer to Problem 20PPE

When escalator where person $\text{C}$ standing is faster than person $A$ .

  

Person $\text{C}$ is slower than person $A$ .

  

Explanation of Solution

Given informationGiven information is: The person $A$ walks up a set of stairs and person $\text{B}$ walks up an escalator next to the stairs.

Calculation:

The graph provided into textbook the vertical distance travelled as person $A$ walks up a set of stairs and person $\text{B}$ walks up an escalator next to the stairs. Then draw a line that could represent the vertical distance travelled as person $\text{C}$ rides the escalator standing still.

Copy of the graph provided in textbook,

  

The person $\text{C}$ is always less than-person $\text{B}$ .

Case 1: When escalator where person $\text{C}$ standing is faster than person $A$ .

  

Case 2: Person $\text{C}$ is slower than person $A$ .