- #1
razrsharp67
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Homework Statement
When a ball was thrown and caught at the same height from which it was thrown, it was measured to have traveled 12 meters in 1.3 seconds. What was the launch velocity?
The answer on the key says 11.2 meters per second.
Homework Equations
Yfinal = Yinit + Vt + 1/2 a t^2
The Attempt at a Solution
If it goes 12 meters in 1.3 seconds, then it hit its peak in .65 seconds at 6 meters.
So Yfinal = 6 and Yinit = 0 and t = .65 and a = -9.81
Plugging that all in and solving for V I get 12.419 m/s. But my teacher on the key says the answer is 11.2 m/s. Where am I going wrong?