A 30-Kg Block Is on a Frictionless Horizontal Surface

question 37

Multiple Choice

A 3.0-kg block is on a frictionless horizontal surface. The block is at rest when, at t = 0, a force (magnitude P = 2.0 N) acting at an angle of 22° above the horizontal is applied to the block. At what rate is the force P doing work at t = 2.0 s?

• A) 2.3 W
• B) 2.0 W
• C) 1.4 W
• D) 1.7 W
• E) 1.2 W

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Definitions:

Period of Time

A length or duration of moments which is measured in terms of seconds, minutes, hours, days, months, or years.

Capacity Decision

A determination made regarding the amount of production resources needed to meet expected demand.

Variable Costs

Costs that vary directly with the level of production or the volume of output.

Special Assumption

A specific condition assumed to be true for the purpose of a theoretical framework or model, which may not apply in all real-world situations.