Posted by **Anonymous** on Sunday, October 14, 2012 at 9:51pm.

An autographed baseball rolls oﬀ of a 0.59 m

high desk and strikes the ﬂoor 0.42 m away

from the desk.

How fast was it rolling on the desk before

it fell oﬀ? The acceleration of gravity is

9.81 m/s

2

.

Answer in units of m/s

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