Only One of the Following Statements Is Correct

question 21

Multiple Choice

Only one of the following statements is correct.The correct statement is:

• A)Average velocity is not a vector quantity.
• B)The average velocity can always be expressed as one-half the sum of the initial and final velocities.
• C)An accelerating body always changes its direction of motion.
• D)The instantaneous velocity is equal to the time rate of change of the displacement.
• E)A body undergoing constant acceleration changes its velocity by larger increments in succeeding equal time intervals.

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Definitions:

Alpha-Galacturonic Acid

A component of pectin, a polysaccharide found in the cell walls of plants, involved in maintaining cell structure and rigidity.

Glucagon

A hormone produced by the pancreas that promotes the increase of blood glucose levels by stimulating glycogen breakdown in the liver.

Pectin

A complex carbohydrate found in the cell walls of plants that is often used as a gelling agent in foods and for its dietary fiber properties.

Hemicellulose

A polysaccharide found in plant cell walls that works with cellulose and lignin to provide structural support.