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Problem 1. (a) A rocket of mass m starts from rest and is launched straight up from the ground with thrust F i t .

Problem 1. (a) A rocket of mass m starts from rest and is launched straight up from the ground with

thrust Fit . Find an expression for the rocket's speed at height h above the ground. Neglect air resistance. (b) The motor of a 350 g model rocket generates 9.5 N thrust. If air resistance can be neglected, what is the rocket's speed when it is 85 m above the ground?

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