The Motion of a Particle Is Described in the Velocity

question 165

Multiple Choice

The motion of a particle is described in the velocity vs. time graph shown in the figure. Over the nine-second interval shown, we can say that the speed of the particle

• A) only increases.
• B) only decreases.
• C) increases and then decreases.
• D) decreases and then increases.
• E) remains constant.

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Definitions:

Hypothalamus

A region of the brain that coordinates many activities, including temperature regulation, thirst, hunger, and emotional activity.

Diencephalon

The between brain, which integrates sensory and motor information on its way to the cerebral cortex.

Mesencephalon

Also known as the midbrain, it is a portion of the brainstem involved in vision, hearing, motor control, sleep/wake, arousal, and temperature regulation.

Tectum

Roof (area above the ventricle) of the midbrain; its functions are sensory processing, particularly visual and auditory, and the production of orienting movements.