A Person Standing on Top of a 40-M High Cliff

question 52

Multiple Choice

A person standing on top of a 40-m high cliff throws a rock with a mass of 0.25 kg off the cliff.The rock leaves the person's hand with a speed of 14 m/s and makes an angle of 60 degrees above the horizontal.What is the kinetic of the rock when it reaches the top of its path?

• A)6.1 J
• B)0 J
• C)25 J
• D)49 J
• E)18 J

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Definitions:

Public Health Policy

Guidelines, regulations, and actions designed by government or non-government organizations to achieve specific health care goals within a society.

Risk Assessment

The process of evaluating the potential risks that may be involved in a projected activity or undertaking.

Systematic Review

A research method that collects and critically analyzes multiple research studies or papers on a specific topic.

Publication Bias

The tendency for positive or significant results to be published more frequently than negative or non-significant findings, potentially skewing the scientific literature.