A Block of Wood Is Pulled by a Horizontal String

question 14

Multiple Choice

A block of wood is pulled by a horizontal string across a rough surface at a constant velocity with a force of 20 N.The coefficient of kinetic friction between the surfaces is 0.3.The force of friction is

• A)impossible to determine without knowing the mass of the block.
• B)impossible to determine without knowing the speed of the block.
• C)0.3 N
• D)6 N
• E)20 N

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Definitions:

Frontal Lobe

The part of the brain located at the front of each cerebral hemisphere, associated with complex cognitive functions and behavior control.

Stroke

A medical condition that occurs when the blood supply to part of the brain is interrupted or reduced, leading to brain tissue death and potentially resulting in physical and cognitive impairments.

Parietal Lobe

The parietal lobe is a region of the brain that plays a key role in processing sensory information from various parts of the body, spatial orientation, and language interpretation.

Temporal Lobe

A region of the cerebral cortex responsible for processing auditory information, as well as being involved in memory and speech.