# Physics (Kinematics)

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A ball is thrown 83.3 m upward and then falls
back to earth.Neglecting air resistance, how long will it
be in the air? The acceleration of gravity is
9.8 m/s2 .

• Physics (Kinematics) -

hf=hi+vi*t-4.9 t^2

hf, hi =0
solve for t.

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