A Common Car Engine Is 20% Efficient

question 25

Multiple Choice

A common car engine is 20% efficient.When cruising,the car encounters an average retarding force of 1000 N.If the energy content of gasoline is 40 MJ/L,how many kilometers per liter does the car achieve?

• A)14 km/L
• B)12 km/L
• C)10 km/L
• D)8 km/L
• E)none of the above

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Definitions:

Average Rate of Return Method

A technique used in capital budgeting to estimate the profitability of potential investments.

Consideration

Something of value given by both parties to a contract that induces them to enter into the agreement to exchange mutual performances.

Time Value

The concept that money available at the present time is worth more than the same amount in the future due to its potential earning capacity.

Present Value Amount

The current value of a future sum of money or stream of cash flows, given a specified rate of return.