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Finding initial velocity in free fall with given meters.

1. The problem statement, all variables and given/known data

A juggler throws a ball just so it reaches the ceiling at 3.0 meters. (3m above hand)
How do I solve for initial velocity?
2. Relevant equations



3. The attempt at a solution
 
Last edited:

PeterO

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1. The problem statement, all variables and given/known data

A juggler throws a ball just so it reaches the ceiling at 3.0 meters. (3m above hand)
How do I solve for initial velocity?
2. Relevant equations



3. The attempt at a solution
You would use the fact that falling from the ceiling to his hand mirrors his toss to the ceiling.
One is travel up - the other down
One starts at high speed and finished at zero speed, the other starts at zero speed and finishes at the same high speed.
 
Recall the equations for motion, time and displacement and see which one fits. For that you have to see what values you know and what you do not know.
 

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