A block of mass m is dropped from the fourth floor of an
Chapter 5, Problem 5.12(choose chapter or problem)
A block of mass m is dropped from the fourth floor of an office building, subsequently hitting the sidewalk at speed v. From what floor should the mass be dropped to double that impact speed? (a) the sixth floor (b) the eighth floor (c) the tenth floor (d) the twelfth floor (e) the sixteenth floor
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