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Question #2:A ball is thrown straight upward from the ground. The ball passes a window4.35 mabove the ground and is seen to descend past that same window3.68 safter it went by on the way up.

1. What is the total length of time the ball is in the air?

2. Relevant equations

[tex]

v = v_0 + a t

[/tex]

[tex]

x = x_0 + v_0 t + (1/2) a t^2

[/tex]

[tex]

v^2 = v_0^2 + 2 a \Delta x

[/tex]

and Quadratic formula

3. The attempt at a solution

I tried finding the velocity, max height and then plugging it in the quadratic formula but it is not the right answer. I'm not sure how else to do it? Any help would be greatly appreciated

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# Homework Help: Professor leaps off a helicopter, ball thrown in the air Kinematics

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