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 = 0.97 m from the end
after falling a vertical distance h2 = 1.23 m from the end of the track.
m=522 g
h
h2
F
x
T
(a) At what height above the ground does the ball start to move?
1.57
x 1.42 m
(b) What is the speed of the ball wher' it leaves the track?
1
X 1.94 m/s
(c) What is the speed of the ball when it hits the ground?
4.91
X 5.28 m/s