Which of the Following Examples BEST Describes Linear Motion

question 8

Multiple Choice

Which of the following examples BEST describes linear motion?

• A)Lower limb moving around knee joint axis during knee extension
• B)Displacement of the center of mass during walking
• C)Hand bringing food to the mouth during eating
• D)Gliding motion between the surfaces of two joints

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Definitions:

DC Motors

Electric motors that run on direct current electricity, commonly used in various applications from small toys to large vehicles.

Relays

Electrically operated switches used to control circuits.

Fretting

Wear at the contact surfaces of two materials that occurs from repeated cyclical motion or vibration, often seen in electrical connections.

Thermal Cycling

A pattern of heating and cooling that, over time, can cause resistance to build up in electrical connections.