Five Motion Diagrams in Which Points Represent the Positions of an Object

question 12

Multiple Choice

Five motion diagrams in which points represent the positions of an object at equal time intervals are shown below. Which statement is correct?

• A) A has the greatest speed and the greatest acceleration.
• B) C has decreasing speed.
• C) D slows down and then speeds up.
• D) D speeds up and then slows down.
• E) E has a greater speed than A.

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion in a set of values, indicating how much the values in a dataset deviate from the mean.

Confidence Interval

An estimated range of values calculated from sample data that is likely to include the true parameter of the whole population with a certain level of confidence.

Population Mean

The average value of all members of a total population.

Standard Deviation

Standard deviation is a statistical measure of the dispersion or spread of data points in a dataset from their mean, indicating how spread out the values are.