A 20-Kg Block Slides on a Frictionless 25° Inclined Plane

question 21

Multiple Choice

A 2.0-kg block slides on a frictionless 25° inclined plane. A force of 4.6 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block?

• A) 1.8 m/s² up the incline
• B) 2.3 m/s² up the incline
• C) 6.6 m/s² down the incline
• D) 1.8 m/s² down the incline
• E) 2.3 m/s² down the incline

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Definitions:

Biological Species Concept

A definition of species as groups of interbreeding natural populations that are reproductively isolated from other such groups, emphasizing the role of sexual reproduction in maintaining species integrity.

Geographical Barriers

Natural formations or features that isolate ecosystems or populations, influencing the distribution and evolution of species.

Reproductive Behaviors

Actions or sequences of actions performed by animals or plants that directly relate to the production of offspring.

Arctic Tundra

A cold, treeless biome located in the Arctic regions, characterized by permafrost, short growing seasons, and low biodiversity.