Asked by Caroline

Nicole throws a ball straight up.Chad watches the ball from a window 5meters above the point where Nicole released it . The ball passes Chad on the on the way up, and it has a speed of 10m/s as it passes him on the way back down.Determine how fast Nicole threw the ball upwards
Answered by Elena
The speed at the 5-m level is of the same magnitude on the way up and on the way down=>
s=(v²-v₀²)/2g
Solve for v₀
Answered by killa
-14 m/s
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