A Worker Lifts a 20

question 54

Multiple Choice

A worker lifts a 20.0-kg bucket of concrete from the ground up to the top of a 20.0-m tall building.The bucket is initially at rest,but is traveling at 4.0 m/s when it reaches the top of the building.What is the minimum amount of work that the worker did in lifting the bucket?

• A) 3.92 kJ
• B) 400 J
• C) 560 J
• D) 4.08 kJ
• E) 160 J

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Definitions:

Planning

The process of thinking about and organizing the activities required to achieve a desired goal, involving the creation and maintenance of a plan.

Controlling

The process of monitoring performance, comparing it with goals and standards, and taking corrective action when necessary.

Improving

is the process of making something better or more effective through changes or adjustments.

Planning Process

A systematic approach to defining goals, developing strategies, and outlining tasks and schedules to achieve the desired outcomes.