2-15 The Figure Shows the Speed as a Function of Time

question 84

Multiple Choice

2-15
The figure shows the speed as a function of time for an object in free fall near the surface of the earth. The object was dropped from rest in a long evacuated cylinder.
-If the same object were released in air, the magnitude of its acceleration would begin at the free-fall value, but it would decrease continuously to zero as the object continued to fall.For which one of the choices given does the solid line best represent the speed of the object as a function of time when it is dropped from rest in air? Note: The dashed line shows the free-fall under vacuum graph for comparison.

• A)a
• B)b
• C)c
• D)d

Identify and name organic compounds based on IUPAC nomenclature.

Determine the boiling point order of organic compounds based on molecular structure and intermolecular forces.

Understand the concept of conjugation and its effect on the spectral properties of compounds.

Explain the relative solubility of organic compounds in water.

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Definitions:

First Order

In mathematics and science, a concept indicating the most immediate or primary in sequence, often used to describe equations, reactions, or effects that involve only the first power of a variable or are of the first degree.

SSE

Sum of Squared Errors; the total squared difference between each observed value and its corresponding predicted value in regression analysis.

Squares

A mathematical operation involving multiplying a number by itself.

Regression Analysis

Regression analysis is a statistical method used to model and analyze the relationship between a dependent variable and one or more independent variables.