A 200 Kg Box Slides Down a 12

question 77

Multiple Choice

A 20.0 kg box slides down a 12.0 m long incline at an angle of 30.0 degrees with the horizontal. A force of 50.0 N is applied to the box in the upward direction to try to prevent it from sliding down the incline. The applied force makes an angle of 10.0 degrees to the incline. If the incline has no friction, then the increase in the kinetic energy of the box is

• A) 420 J.
• B) 475 J.
• C) 521 J.
• D) 585 J.
• E) 620 J.

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Definitions:

Profit Margin

A financial metric depicting the percentage of revenue that exceeds the costs of goods sold, showing the profitability of a business.

Net Sales

Company sales revenue post deduction of returns, allowances for imperfections or absences, and discounts.

Depreciation

An accounting method of allocating the cost of a tangible asset over its useful life to account for declines in value over time.

Plant Assets

Durable physical assets employed in the running of a business, designed for long-term use and not for being sold off.