A Girl and Her Bicycle Have a Total Mass of 40

question 7

Multiple Choice

A girl and her bicycle have a total mass of 40 kg.At the top of the hill her speed is 5.0 m/s.The hill is 10 m high and 100 m long.If the force of friction as she rides down the hill is 24 N,what is her speed at the bottom?

• A) 5.0 m/s
• B) 10 m/s
• C) 11 m/s
• D) She stops before she reaches the bottom.

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Definitions:

Marginal Cost Curve

A graphical representation showing how the marginal cost of production varies with the quantity of output produced.

Demand Curve

A visual depiction that illustrates the correlation between a product's price and the amount consumers are willing to buy.

Total Cost Curve

A graphical representation showing how the total cost of producing a good changes as the quantity produced changes.

Marginal Revenue Curve

A graph that shows the change in total revenue for each unit sold, illustrating how marginal revenue changes as output changes.