EXAMPLE 4 A ball dropped from the top of a building.. How tall is the building if the ball took 12 seconds to reach the ground? With what velocity will it strike the ground? Express the а. b. answers in metric units. [1] s(t) = ,gt² + v,t + s, 1 %3D Sref + So [2] sy(t) = gt² + v,t Sref = So t = 12 secs

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