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Question: 1 physics problem solving a more people end up in...

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1. Physics Problem Solving

a.) More people end up in U.S. emergency rooms because of fall-related injuries than from any other cause. At what speed 𝑣 vwould someone hit the ground who accidentally steps off the top rung of a 14.00 ft tall stepladder? (That step is usually embossed with the phrase "Warning! Do not stand on this step.") Ignore the effects of air resistance. Let the +y direction point vertically upward and the origin be on the ground.

b.) While standing at the edge of the roof of a building, a man throws a stone upward with an initial speed of 7.63 m/s. The stone subsequently falls to the ground, which is 12.7 m below the point where the stone leaves his hand.

At what speed does the stone impact the ground? Ignore air resistance and use g=9.81 m/s2 for the acceleration due to gravity.

How much time is the stone in the air?

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