A Boxcar of Mass 200 Tons at Rest Becomes Uncoupled $\degree$

question 7

Multiple Choice

A boxcar of mass 200 tons at rest becomes uncoupled on a 2.5F $\degree$ grade.If the track is considered to be frictionless,what speed does the boxcar have after 10 seconds?

• A)0.37 m/s
• B)0.59 m/s
• C)1.3 m/s
• D)4.3 m/s

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Definitions:

Seigniorage

Seigniorage is the profit made by a government by issuing currency, especially the difference between the face value of coins and their production costs.

Medium Of Exchange

An intermediary instrument, such as money, used to facilitate buying and selling goods and services.

Money

A medium of exchange that facilitates trade, serves as a unit of account, a store of value, and sometimes, a standard of deferred payment.

Commodity

A basic good used in commerce that is interchangeable with other goods of the same type.