Write a quadratic equation that has the projectile launched from ground level and then hit the ground 4 seconds later
Vertical throw up
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g = 9.805m/s²; t = 4sec; initial speed t; h = 0
\(h=v_0t-\frac{g}{2}t^2=0\\ v_0= \frac{1}{2}\ g\ t\)
\(\large v_0=\frac{g}{2}\cdot 4\ sec\)Not a quadratic equation but valid.
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