`` NEWTON Velocity at Peak of Vertical Throw
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Name: Nicholas
Status: student
Grade: 4-5
Location: MN
Country: USA
Date: winter 2013-14

If you throw a ball straight up in the air, how long is it stopped before it reverses and comes back down? Or does it not really stop at all?

In the vertical direction, the ball starts with a large, positive velocity, slows, passes through zero velocity, and then continues downward at a negative velocity that becomes more negative as it falls. It passes through zero velocity, just as it passes through any other velocity such as 1, -2, etc. It does not dwell at zero.

Nathan A. Unterman

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