A Policeman Walks on His Beat Back and Forth

question 24

Multiple Choice

A policeman walks on his beat back and forth. His average speed is determined from

• A) his velocity divided by the time.
• B) time divided by how far he ends up from the starting point.
• C) his total distance covered divided by the time.
• D) time divided by his total distance covered.

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Definitions:

Blind Spot

An area in the visual field that lacks light-detecting photoreceptor cells on the optic disc of the retina, making it insensitive to light.

The Retina

The retina is a layer of tissue at the back of the eye that senses light and sends signals to the brain, enabling visual perception.

The Cornea

The transparent front part of the eye that covers the iris, pupil, and anterior chamber, contributing to the eye's focusing power.

Optic Chiasm

An X-shaped structure in the brain where the optic nerves partially cross, involved in the visual processing system.