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I added two pictures.. One of the word problem and one of my diagram I made..

My work:

1.Wnet = Kf - Ki

-Ugf = Kf... -mgy = mv^2/2 ... - gy = v^2/2

2. x^2 + y^2 = 1780^2

dy/dx = -x/y = velocity (v) at point (x,y)

3. gy = x^2/(2y^2)

4. gy = (1780^2 - y^2)/(2y^2)

... anyways... I know this must be totally wrong..

Can someone please help me answer this problem?

My work:

1.Wnet = Kf - Ki

-Ugf = Kf... -mgy = mv^2/2 ... - gy = v^2/2

2. x^2 + y^2 = 1780^2

dy/dx = -x/y = velocity (v) at point (x,y)

3. gy = x^2/(2y^2)

4. gy = (1780^2 - y^2)/(2y^2)

... anyways... I know this must be totally wrong..

Can someone please help me answer this problem?