Adisa Pulls a 35

question 8

Multiple Choice

Adisa pulls a 35.0-N crate up a 4.00-m-long inclined plane at a constant velocity.If the plane is inclined at an angle of 39.0° to the horizontal and there is a constant force of friction of 13.0 N between the crate and the surface,what is the net change in potential energy of the crate?

• A)88 J
• B)−88 J
• C)109 J
• D)−109 J
• E)None of these

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Definitions:

Formal Agreement

refers to a legally binding contract between parties that outlines specific obligations and rights.

Covert Collusion

A secret agreement between firms to fix prices, limit production, or engage in other practices to restrict competition illegally.

Kinked Demand Curve Model

An economic model suggesting that price competition among firms may be rigid because a firm raising its price does not lead to competitors following suit, while price decreases are matched. This results in a demand curve with a kink.

Marginal Revenue Curve

A graphical representation that shows the change in total revenue resulting from selling one additional unit of a good or service.