Two Billiard Balls Have Velocities of 2

question 57

Multiple Choice

Two billiard balls have velocities of 2.0 m/s and -1.0 m/s when they meet in an elastic head-on collision. What is the final velocity of the second ball after collision?

• A) "-2.0 m/s"
• B) "-1.0 m/s"
• C) "-0.5 m/s"
• D) "+1.0 m/s"

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Definitions:

True Correlation

The actual degree of a linear relationship between two variables, excluding any error or distortion.

Linear Relationship

A type of correlation where there is a constant change rate between two variables, indicative of a straight line when graphed.

Confidence Interval Estimate

A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter.

Prediction Interval

A prediction of the range within which future data points are likely to land, based on past observations, along with a specified level of confidence.