A Ball Is Whirled on the End of a String

question 38

Multiple Choice

A ball is whirled on the end of a string in a horizontal circle at constant speed. Suddenly, the string breaks. Immediately after the string breaks, the ball will

• A) have a horizontal velocity away from the center of the circle.
• B) have a horizontal velocity that is tangential to the circle.
• C) have a horizontal velocity toward the center of the circle.
• D) have a horizontal velocity partly in away from the center of the circle and partly tangent to the circle.
• E) have no horizontal velocity.

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Definitions:

Percentile

An indicator showing the value beneath which a certain percentage of data points in a collection of data lies.

Continuous Random Variables

Variables that can take on any value within a continuous range of values.

Probability Distribution

A statistical function that describes all the possible values and likelihoods that a random variable can take within a given range.

Event

An occurrence or happening at a specific place and time, often of significance.