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A ball with mass 015kg is thrown upward with initial velocity 20m/s from the roof of a building 30m high. There is air resistance of magnitude v^2/1325 directed opposite to the velocity , where the velocity is measured in m/s.

a. Find the max height above the ground that the ball reaches.

b. Find the time that the ball hits the ground.

I am unsure how to set this one up.

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A ball with a 15-kg ass? –  Goos Feb 6 at 3:43
    
fixed it; i meant mass –  user104922 Feb 6 at 3:46
    
This might be interesting if you are looking for an analytical solution. –  fibonatic Feb 6 at 8:32