What Is the Impact Speed of a Ball Thrown from a Window?

Thread starter J03
Start date Jan 17, 2008
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The discussion centers around calculating the impact speed of a ball thrown upward at 21 m/s from a 19-meter high window. The key principle to apply is the conservation of energy, which involves considering both the initial kinetic energy and the potential energy at the height of the window. Participants emphasize the importance of these concepts in determining the final speed just before impact. The conversation suggests that the final speed will be significantly high due to the combined effects of the initial throw and gravitational acceleration. Understanding these physics principles is crucial for accurately solving the problem.

Jan 17, 2008

J03

Work and Engery Physics Question?

Homework Statement

A ball is thrown up at 21m/s from a 19meter high window. What will be the ball's speed at impact with the ground?

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The Attempt at a Solution

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Jan 17, 2008

quantumdude

Staff Emeritus

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Pretty darn fast.

Ok now seriously, let's see what you've got so far. Think conservation of energy.

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