A 10-Kg Rock and a 20-Kg Rock Are Dropped at the Same

question 386

Multiple Choice

A 10-kg rock and a 20-kg rock are dropped at the same time and experience no significant air resistance. If the 10-kg rock falls with acceleration a , what is the acceleration of the 20-kg rock?

• A) 4a
• B) 2a
• C) a/4
• D) a/2
• E) a

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Definitions:

Public Good

A commodity or service that is provided without profit to all members of a society, either by the government or a private individual or organization.

Flood Control

Measures and strategies implemented to manage water levels and reduce the risk and impacts of flooding.

Tennessee Valley Authority

A federally owned corporation in the United States created in 1933 to provide navigation, flood control, electricity generation, and economic development to the Tennessee Valley, a region particularly affected by the Great Depression.

Invisible Hand

A concept introduced by Adam Smith to describe the self-regulating nature of the market economy driven by individuals' pursuit of their own self-interest.