An Object Is Moving Along a Straight Line

question 5

Multiple Choice

An object is moving along a straight line. The graph shows the object's position from the starting point as a function of time.

-What was the instantaneous velocity of the object at t = 4 s?

• A)+6 m/s
• B)+8 m/s
• C)+10 m/s
• D)+20 m/s
• E)+40 m/s

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Definitions:

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data values from their average (mean).

Variance

A measure of the dispersion of a set of data points around their mean; it quantifies the spread of the data.

Cross-Sectional Study

A research design that analyzes data from a population, or a representative subset, at a specific point in time.

Life Satisfaction

A measure of well-being and contentment with one's life as a whole, reflecting a person's quality of life.