A Ball of Mass M Strikes a Wall That Is

question 54

Multiple Choice

A ball of mass m strikes a wall that is perpendicular to its path at speed +v and rebounds in the opposite direction with a speed -v.The impulse imparted to the ball by the wall is

• A)2mv
• B)mv
• C)zero
• D)-mv
• E)-2mv

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Definitions:

Individualistic Model

Independent view of community, described by Gleason, in which biological interactions are less important in the production of communities than are environmental gradients (such as climate and soil) or even chance. Compare with organismic model.

Interdependent

A relationship in which two or more entities rely on each other for survival or for the completion of processes.

Organismic Model

A conceptual model in biology that sees a community or ecosystem as a single living organism, emphasizing interactions and integration.

Individualistic Model

A theoretical framework in ecology that views communities as assemblies of species with similar ecological requirements, independently distributed along environmental gradients.