Question

Megan is doing an interval training routine in which she would run up the stairs for 4 seconds, stop and do a yoga pose for 3 seconds, sprint up the stairs for another 4 seconds and then another yoga pose for 3 seconds. The athlete then sprints down the stairs for 4 seconds to get back to the gym floor. If Megan started on the gym floor, which graph would represent her distance from the gym floor during this activity?

Answer 1

Option A is correct.

The first graph is the answer.

Step-by-step explanation

For this question, it is the horizontal length of each section and the description of what is going on in each section that we will use to select the right graph.

Starting from the gym floor,

Megan runs up the stairs for 4 seconds,

Her distance from the gym floor increases at a constant rate, spread over 4 seconds, that is, four boxes on the horizontal axis.

stop and do a yoga pose for 3 seconds,

Since she stops here, her distance from the gym floor remains at the same level or height for a period of 3 seconds, that is, straight horizontal line over 3 boxes of the horizontal axis.

sprint up the stairs for another 4 seconds

Her distance from the gym floor increases again at a constant rate, spread over 4 seconds, that is, four boxes on the horizontal axis.

and then another yoga pose for 3 seconds.

Since she stops again here, her distance from the gym floor remains at the same level or height for a period of 3 seconds, that is, straight horizontal line over 3 boxes of the horizontal axis.

She then sprints down the stairs for 4 seconds to get back to the gym floor.

Now, her distance from the gym floor decreases from where it was at the beginning of this stage and quickly goes back to 0, all in 4 seconds, that is, four boxes of the horizontal axis.

We can then easily see that only the first graph obeys this conditions and the corresponding number of horizontal boxes for each condition.

Hope this Helps!!!