Petra Pushes a Crate Across a Rough Floor

question 74

Multiple Choice

Petra pushes a crate across a rough floor.A frictional force of 28.0 N acts to oppose the motion of the crate,and Petra pushes with a horizontal force of 36.4 N.If the net work Petra does is 94.5 J,through what distance did she push the crate?

• A)11.3 m
• B)3.38 m
• C)2.60 m
• D)2 650 m
• E)3 440 m

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Definitions:

Weighted Average

A calculation that takes into account the varying degrees of importance of the numbers in a data set, often used in calculating the cost of inventory or the average cost of capital.

Unit Cost

The cost incurred to produce, purchase, or acquire a single unit of a product or service.

FIFO Costing

An inventory valuation method where the costs of the earliest goods purchased are the first to be recognized in determining cost of goods sold.

Gross Profit

The difference between sales revenue and the cost of goods sold (COGS), indicating the profitability of a company's core business activities.