Question

A stone thrown horizontally from the top of a 24m tower hits the ground at a point 18m from the tower.
Find the speed at which the stone was thrown.?

Answer 1

Answer:

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Explanation:

h=1/2gt2 (where h is the height and t is time of fall).

g=10

Thus, 24=1/2(10)t2

=>t2=4.8____________i

Again, r=vt (where r is the distance traveled in the horizontal direction).

=>18=vt

Squaring both sides,

324=v2t2_____________ii

Dividing respective sides ii by 1, we get

v2=67.5

Thus, v=8.2(approx.).