How Fast Did Nicole Throw the Ball?

AI Thread Summary
The discussion revolves around a physics problem where Nicole throws a ball straight up, and it passes Chad at a height of 5.90 m with a speed of 15.0 m/s on its way down. The main confusion is regarding the relevance of Chad's position to solving for the initial speed at which Nicole threw the ball. Participants are encouraged to apply the kinematic equation V final = V initial + a(delta t) to find the solution. Clarification is sought on how to incorporate the height and speed to determine the initial velocity of the ball. Understanding the relationship between the ball's motion and the height at which it passes Chad is crucial for solving the problem.
zellster87
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Homework Statement


This problem has really been bugging me, and i can't seem to figure it out. Heres the question:

Nicole throws a ball straight up. Chad watches the ball from a window 5.90 m above the point where Nicole released it. The ball passes Chad on the way up, and it has a speed of 15.0 m/s as it passes him on the way back down.

How fast did nicole throw the ball?

I don't understand how the guy in the window at 4.9m meters helps me at all. Any help will be greatly apprectiated. Thanks.

Homework Equations



V final = V initial + a(delta t)

The Attempt at a Solution

 
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