Question #349042

a stone thrown from the top of the building is given initial velocity off 20m/s streight upwards, the stone is launched 50m above the ground and the stone just misses the edge of the roof on its way down using ta = 0

Expert's answer

"t_1=\\frac vg=2~s,"

"s=\\frac{v^2}{2g}=20~m,"

"t_2=\\sqrt\\frac{2(s+h)}g=3.7~s,"

"t=t_1+t_2=5.7~s."

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