How many additional flights of stairs must the person climb

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Question: A person climbs 4 flights of stairs and then drops a block of mass m into the open stairwell. The block subsequently hits the ground floor with an impact speed v.

Part A: How many additional flights of stairs must the person climb so that an identical block hits the ground floor with an impact speed of 2v, double the original impact speed?

I want help to find how many additional flights of stairs must the person climb.

Reference no: EM13716222

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