Sultan throws a ball horizontally from his window, 12 m above the garden. It reaches the ground after
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We use the equation of motion,
Here, S is the height, u is initial velocity and a is acceleration.
Given,
As acorn falls from tree, therefore we take the value of and initial velocity
.
Substituting these values in equation of motion,
Thus, the time taken by the acorn to fall 20 feet ( 6.096 m ) is 1.12 s.