- #1
skysunsand
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Homework Statement
Nicole throws a ball straight up. Chad watches the ball from a window 6.10 m above the point where Nicole released it. The ball passes Chad on the way up, and it has a speed of 11.0 m/s as it passes him on the way back down. How fast did Nicole throw the ball?
Homework Equations
x= x0 + v0t + 1/2 at^2
v= v0+at
The Attempt at a Solution
I haven't the slightest clue as how to solve this. If she's tossing it upward, I know that would be a parabola graphically, so perhaps I need to use the quadratic equation at some point.
Need to find acceleration, I suppose, to find how fast she threw the ball?