Suppose That the Speed of a Car, Measured in Miles $\begin{array} { l r r r r r } \text { ELAPSED TIME (sec) } &2 & 4 & 6& 8 & 10\\\text { SPEED of CAR (mph) } & 47 & 32 & 22 & 12 & 7 \end{array}$

question 131

Multiple Choice

Suppose that the speed of a car, measured in miles per hour (mph) , is monitored for some short period of time after the driver applies the brakes. The following table and graph relate the speed of the car to the amount of
Time, measured in seconds (sec) , elapsed from the moment that the brakes are applied. $\begin{array} { l r r r r r } \text { ELAPSED TIME (sec) } &2 & 4 & 6& 8 & 10\\\text { SPEED of CAR (mph) } & 47 & 32 & 22 & 12 & 7 \end{array}$

What general trend do the data reflect? In which of the time intervals does the speed change the most?

• A) With increasing elapsed time, the speed decreases. The speed changes most during the time interval from 8 seconds to 10 seconds.
• B) With increasing elapsed time, the speed decreases. The speed changes most during the time interval from 2 seconds to 4 seconds.
• C) With increasing elapsed time, the speed increases. The speed changes most during the time interval from 2 seconds to 4 seconds.
• D) With increasing elapsed time, the speed increases. The speed changes most during the time interval from 8 seconds to 10 seconds.

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Definitions:

Genetic Diversity

Genetic diversity refers to the total number of genetic characteristics in the genetic makeup of a species, which supports survival and adaptability.

Mutations

Changes in the DNA sequence of a cell's genome, which can affect the cell's function and can be inherited.

Epigenetic Marks

Chemical modifications to the DNA or histone proteins that affect gene activity without altering the DNA sequence, influencing gene expression.

Refractory Period

The period immediately following a stimulus or action during which a nerve or muscle is unresponsive to further stimulation.