A Wheel Rotating About a Fixed Axis Has a Constant

question 20

Multiple Choice

A wheel rotating about a fixed axis has a constant angular acceleration of 4.0 rad/s². In a 4.0-s interval the wheel turns through an angle of 80 radians. Assuming the wheel started from rest, how long had it been in motion at the start of the 4.0-s interval?

• A) 2.5 s
• B) 4.0 s
• C) 3.5 s
• D) 3.0 s
• E) 4.5 s

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Definitions:

Primacy Effect

The tendency to remember information at the beginning of a list better than information in the middle or end.

Recall

The cognitive process of retrieving information from memory without the presence of the original stimulus, often tested in memory and learning experiments.

First Items

The initial elements in a series or list, often given special attention due to their primacy position.

Anterograde Amnesia

An inability to form new memories.