You Are Running Westward with a Speed 1 M/s with Respect

question 48

Multiple Choice

You are running westward with a speed 1 m/s with respect to the ground and observe two cars approaching you. A red car is moving eastward in one lane with a speed 16 m/s relative to you. In a second lane, a blue car is moving faster at a speed 8 m/s with respect to the red car. How fast is the blue car moving with respect to the stationary ground?

• A) 8 m/s
• B) 23 m/s
• C) 25 m/s
• D) 12 m/s
• E) 9 m/s

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Definitions:

Chi-squared Goodness-of-fit Test

This test assesses if observed frequencies in a single categorical variable match expected frequencies determined from a theoretical distribution.

Multinomial Distribution

A generalization of the binomial distribution, which deals with outcomes of a experiment that can fall into more than two categories.

Categories

Distinct groups or classes into which data can be classified.

Expected Frequency

The number of times an event is predicted to occur within a specified number of trials or over a given period of time, based on probability.