The Magnitude of the Acceleration of an Object Moving in a Circle

question 50

Multiple Choice

The magnitude of the acceleration of an object moving in a circle at constant speed is

• A) inversely proportional to the speed squared.
• B) inversely proportional to the speed.
• C) inversely proportional to the radius of the circle squared.
• D) inversely proportional to the radius of the circle.

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Definitions:

Standard Deviation

An indicator of the degree of spread or divergence from the average in a collection of data, showing the extent to which the data points vary from their average value.

Sample Mean

The average value of the observations in a sample, used as an estimate of the population mean, calculated by summing all observations and dividing by the number of observations.

Normal Curve

A symmetric, bell-shaped curve that represents the distribution of many types of data; most scores are near the average, and frequencies decrease as you move away from the center.

Binomial Random Variable

A type of random variable that arises from a binomial experiment, representing the number of successes in a fixed number of independent Bernoulli trials.