A Girl and Her Bicycle Have a Total Mass of 46.0

question 83

Multiple Choice

A girl and her bicycle have a total mass of 46.0 kg.At the top of the hill her speed is 6.0 m/s,and her speed doubles as she rides down the hill.The hill is 15.0 m high and 105 m long.How much kinetic energy and potential energy is lost to friction?

• A)4.3E+3 J
• B)7.6E+3 J
• C)3.5E+3 J
• D)4.4E+3 J
• E)4.2E+3 J

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Definitions:

Marginal Cost

The extra cost associated with producing a further unit of a product or service.

Market Output

The total quantity of a good or service produced and sold by firms in a particular market.

Intertemporal Price Discrimination

A pricing strategy where prices are varied over time for the same product to exploit differences in willingness to pay.

Second-Degree Price Discrimination

A pricing strategy where prices vary according to the quantity consumed or the version of the product, without personal characteristics of the buyer influencing the price.