A Runner Circles a Track of Radius 100 M One

question 48

Multiple Choice

A runner circles a track of radius 100 m one time in 100 s at a constant rate.The greatest change in his velocity from his starting velocity:

• A) occurs one-fourth of the way around the track.
• B) occurs one-half of the way around the track.
• C) occurs three-fourths of the way around the track.
• D) Both a and c are correct.

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Definitions:

Unconditioned Response

An automatic, natural reaction to a stimulus that occurs without any prior learning.

Unconditioned Stimulus

A stimulus that naturally and automatically triggers a response without needing to be learned.

Conditioned Response

A learned reaction or response to a previously neutral stimulus that has been repeatedly presented alongside an unconditioned stimulus.

Grapefruit

A subtropical citrus fruit known for its sour to semi-sweet flavor, also interacting with many medications.