PHYSICS WORK PROBLEM due tonight!! please help!

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A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally, striking the ground a distance x = 0.93 m from the end of the track after falling a vertical distance h2 = 1.18 m from the end of the track.




(a) At what height above the ground does the ball start to move?
m
(b) What is the speed of the ball when it leaves the track?
m/s
(c) What is the speed of the ball when it hits the ground?
m/s

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