Answer to Question #289515 in Physics for Mareeham

Question #289515

A stone projected horizontally from the top of a tower with a speed of 5m/s. It lands on the ground level of the horizontal distance of 20m from the top of the tower. Calculate the height of the tower. g= 10m/s²

1
Expert's answer
2022-01-21T13:48:45-0500

Given:

v0=5m/sv_0=5\:\rm m/s

l=20ml=20\:\rm m

g=10m/s2g=10\:\rm m/s^2


The height of a tower

H=gt22H=\frac{gt^2}{2}

Time of falling

t=l/v0t=l/v_0

So

H=gl22v02=10202252=80mH=\frac{gl^2}{2v_0^2}=\frac{10*20^2}{2*5^2}=80\:\rm m


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