An Object Is Dropped from Rest

question 25

Multiple Choice

An object is dropped from rest. Which of the five following graphs correctly represents its motion? The positive direction is taken to be downward.

• A) I
• B) II
• C) III
• D) IV
• E) V

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Definitions:

Refractory Period

The time right after a stimulus when a nerve or muscle cannot respond to additional stimulation.

Positive Charge

An electrical charge possessed by protons, which is opposite in sign to the charge carried by electrons.

Action Potential

A brief electrical impulse by which information is transmitted along the axon of a neuron.

Refractory Period

A time directly following stimulation in which a nerve or muscle is incapable of responding to more stimulation.