The Drag Force Acting on a Car Can Be Modeled $$F _ { d } = \frac { 1 } { 2 } C _ { d } \rho {{ V } ^ { 2 }} A$$

question 40

Multiple Choice

The drag force acting on a car can be modeled using the following function: $$F _ { d } = \frac { 1 } { 2 } C _ { d } \rho {{ V } ^ { 2 }} A$$
where $F _ { d } =$ drag force
$C _ { d } =$ drag coefficient
$\rho =$ air density
$V =$ speed of car relative to air
$A =$ frontal area of car
The power $P$ required to overcome air resistance can be modeled according to $P = F _ { d } V$ .
When analyzing power as a function of velocity $P ( V )$ , what order is the resulting function?

• A)first order
• B)second order
• C)third order
• D)none of the above

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Definitions:

Theories Of Expectations

Various economic theories that attempt to predict how rational individuals form their expectations about future events, affecting their economic decisions.

Adaptive Expectations Theory

An economic theory that proposes individuals adjust their expectations for the future based on recent past experiences and events.

Certainty Equivalent Theory

An economic theory that quantifies how much risk an investor is willing to take on, expressed as the minimum guaranteed amount an investor would accept rather than take a gamble.

Theories Of Expectations

Economic theories that explore how the expectations of individuals or firms about future economic conditions affect their current decision-making and behavior.