A Baseball Is Hit with a Bat And, as a Result

question 105

Multiple Choice

A baseball is hit with a bat and, as a result, its direction is completely reversed and its speed is doubled. If the actual contact with the bat lasts 0.45 s, what is the ratio of the magnitude of the average acceleration of the ball to its original speed?

• A) 6.7 s^-1
• B) 4.4 s^-1
• C) 2.2 s^-1
• D) 0.15 s^-1

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Definitions:

Pearson r

A measure of the linear correlation between two variables, ranging from -1 to 1, where 1 means a perfect positive linear relationship, -1 a perfect negative linear relationship, and 0 no linear relationship.

Number of Victimizations

The count or tally of instances in which individuals or entities are harmed or affected adversely, typically used in criminological and sociological research.

Scatterplots

A graph in which two variables are plotted along two axes, the pattern of the resulting points revealing any correlations.

Regression Equation

An equation that represents the relation between a dependent variable and one or more independent variables, used to predict the dependent variable.