In One-Dimensional Motion,the Average Speed of an Object That Moves

question 15

Multiple Choice

In one-dimensional motion,the average speed of an object that moves from one place to another and then back to its original place has which of the following properties?

• A)It is positive.
• B)It is negative.
• C)It is zero.
• D)It can be positive,negative,or zero.

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Definitions:

Signaling Molecule

A chemical substance, such as a hormone or neurotransmitter, that is involved in transmitting information between cells and tissues within an organism.

Receptor

A molecular structure within or on the surface of a cell that binds to specific molecules like hormones or neurotransmitters, triggering a specific cellular response.

Histamine

Substance released from mast cells that causes inflammation.

Allergic Reaction

An immune system response to a foreign substance that is not typically harmful to the body, such as pollen or certain foods.