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April 17, 2014

Homework Help: physics

Posted by Anonymous on Monday, February 13, 2012 at 10:00pm.

A cement block accidentally falls from rest from the ledge of a 52.1-m-high building. When the block is 19.8 m above the ground, a man, 2.00 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have to get out of the way?

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