A Stone Is Thrown with an Initial Upward Velocity of 7.0

question 121

Multiple Choice

A stone is thrown with an initial upward velocity of 7.0 m/s and experiences negligible air resistance.If we take upward as the positive direction,what is the velocity of the stone after 0.50 s?

• A)2.1 m/s
• B)4.9 m/s
• C)-2.1 m/s
• D)-4.9 m/s
• E)0.00 m/s

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Definitions:

Marginal Revenue

The boost in income achieved by selling one more unit of a product or service.

Marginal Cost

The growth in aggregate expenditure brought about by generating an extra unit of a product or service.

Economic Profit

The difference between total revenue and total costs, where costs include both explicit and implicit costs.

Competitive Firm

A company that operates in a market where it must take the prevailing market price as given because the firm's individual sales do not significantly affect the market price.