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physics

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A block starts at rest and slides down a fric-
tionless track.
The acceleration of gravity is 9.81 m/s2 .
It leaves the track horizontally, striking the
ground (as shown in the figure above).
b b b
b
b
b
b
b
b
b
b
b
502 g
h
2.2 m
4.4 m
9.81 m/s2
a) At what height h above the ground is the
block released?
Answer in units of m

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