Four Identical Blocks Are Moving on a Surface for Which

question 22

Multiple Choice

Four identical blocks are moving on a surface for which the coefficient of kinetic friction between each block and the surface is µ_k. The velocity of each block is indicated by the vector on the block. For which block is the force of friction between the surface and the block greatest?

• A) 1
• B) 2
• C) 3
• D) 4
• E) The force of friction is the same for all blocks.

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Definitions:

Entire Community

Refers to all the organisms living within a specific area, encompassing both the living (biotic) and non-living (abiotic) components of the environment.

Crucial Species

Key species that have a disproportionately large effect on their ecosystem's structure and function, often pivotal for biodiversity.

Keystone Species

A crucial species whose presence significantly influences the survival of other species in an ecosystem, and its removal would lead to significant changes in the ecosystem's structure.

Tropic Interactions

Ecological interactions that cause organisms to move or grow toward or away from stimuli, including phototropism, hydrotropism, and others.