Homework Help: Physics (Kinematics)

Posted by Joy on Saturday, October 6, 2012 at 2:32am.

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 .
Answer in units of s

Physics (Kinematics) - Anonymous, Saturday, October 6, 2012 at 7:08am
hf=hi+vi*t-4.9 t^2

hf, hi =0
solve for t.

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