How much time does the man have to get out of the way

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A cement block accidentally falls from rest from the ledge of a 57.6-m-high building. When the block is 10.3 m above the ground, a man, 1.80 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?

Reference no: EM13992771

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