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March 30, 2017

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A 75 g autographed baseball slides off of a
1.3 m high table and strikes the floor a hori-
zontal distance of 0.65 m away from the table.
The acceleration of gravity is 9.81 m/s2 .

What was the direction of the ball’s velocity
just before it hit the floor?
That is, at what angle (in the range −90◦ to
+90◦ relative to the horizontal directed away
from the table) did the ball hit the floor?
Answer in units of ◦.

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