If a Rock Is Thrown Upward on the Planet Mars $12 \mathrm {~m} / \mathrm { s }$

question 165

Multiple Choice

If a rock is thrown upward on the planet Mars with a velocity of $12 \mathrm {~m} / \mathrm { s }$ , its height in meters $t$ seconds later is given by
$$y = 12 t - 1.92 t ^ { 2 }$$
Find the average velocity over the time interval $[ 2,3 ]$ .

• A) \(- 0.6 \mathrm {~m} / \mathrm { s }\)
• B) \(4.4 \mathrm {~m} / \mathrm { s }\)
• C) \(2.4 \mathrm {~m} / \mathrm { s }\)
• D) \(3.4 \mathrm {~m} / \mathrm { s }\)
• E) \(1.4 \mathrm {~m} / \mathrm { s }\)

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Definitions:

Least Squares Regression

A statistical method used to determine the line of best fit by minimizing the sum of the squares of the vertical distances of the points from the line.

Calories

Units of energy measurement used to quantify the energy that foods provide to the body.

Sugar

A sweet crystalline substance obtained primarily from sugarcane and sugar beet, used as a sweetener in food and drink.

Slope

The rate at which a dependent variable changes with respect to an independent variable in a linear relation.