An Object of Mass M Moving at Speed V Strikes

question 72

Multiple Choice

An object of mass m moving at speed v strikes and object of mass 2m which had been at rest. The first object bounces backward along its initial path at speed v. Is this collision elastic, and if not, what is the change in kinetic energy of the system?

• A) The collision is elastic.
• B) The kinetic energy decreases by mv².
• C) The kinetic energy decreases by 1/2 mv².
• D) The kinetic energy increases by mv².

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Definitions:

Bearing Risk

The action or practice of assuming the potential for loss or danger in a financial operation or investment.

Dollar Return

The total amount of money gained or lost on an investment, expressed in dollars.

Preferred Stock

A class of ownership in a corporation with a specified dividend that is paid out before dividends to common stockholders and typically does not carry voting rights.

Annual Dividend

The total dividend payment a shareholder receives from a company in one year, often expressed as an amount per share.