A Rifle of Mass M Is Initially at Rest but Free

question 52

Multiple Choice

A rifle of mass M is initially at rest but free to recoil.It fires a bullet of mass m and velocity v (relative to the ground) .After firing, the velocity of the rifle (relative to the ground) is:

• A)-mv
• B)-Mv/m
• C)-mv/M
• D)-v
• E)mv/M

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Definitions:

Interest Rate

The financial cost, expressed as a percent of the principal, that borrowers incur from lenders to use assets.

Present Value

The existing value today of a sum of money to be received in the future or continuous cash inflows, calculated at a certain rate of return.

Loanable Funds

The money available for borrowing, which includes savings that are available for investment and loans.

Random Walk

A theory suggesting that stock market prices follow a random path, making it impossible to predict future price directions based on past information.