A Rock Is Dropped from Rest from a Height H

question 25

Multiple Choice

A rock is dropped from rest from a height h above the ground. It falls and hits the ground with a speed of 11 m/s. From what height should the rock be dropped so that its speed on hitting the ground is 22 m/s? Neglect air resistance.

• A)1.4h
• B)2.0h
• C)3.0h
• D)4.0h
• E)0.71h

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A designated space within a building, separated by walls, for a particular purpose or activity.

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The skills, knowledge, and experience possessed by an individual or population, viewed in terms of their value or cost to an organization or country.

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A position taken by someone to provoke debate or challenge the prevailing viewpoint for the sake of argument or analysis.

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