An 80-N Crate Slides with Constant Speed a Distance of 5.0

question 37

Multiple Choice

An 80-N crate slides with constant speed a distance of 5.0 m downward along a rough slope that makes an angle of 30° with the horizontal.The work done by the force of gravity is:

• A)-400 J
• B)-200 J
• C)-69 J
• D)200 J
• E)400 J

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Definitions:

Autism

A developmental disorder characterized by difficulties with social interaction and communication, and by restricted and repetitive behavior.

Information-Processing Approach

A cognitive psychology perspective emphasizing the way people focus on, manipulate, store, and retrieve information.

Allocate Attention

Refers to the process of focusing cognitive resources on specific stimuli, tasks, or goals while ignoring others.

Information-Processing Approach

A cognitive approach that likens the human mind to a computer, focusing on how information is taken in, stored, and retrieved.