`` 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


Question:
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?

Replies:
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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