A stone is dropped from a cliff. Its speed af | vedclass

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Question

(A) Given:Initial velocity $u = 0 \, m s^{-1}$ (since the stone is dropped).Distance covered $s = 100 \, m$.Acceleration due to gravity $g = 9.8 \, m

Vedclass · Accepted Answer

$44.2$

Vedclass · Answer

(A) Given:Initial velocity $u = 0 \, m s^{-1}$ (since the stone is dropped).Distance covered $s = 100 \, m$.Acceleration due to gravity $g = 9.8 \, m s^{-2}$.Using the third equation of motion: $v^2 - u^2 = 2as$.Substituting the values: $v^2 - 0^2 = 2 	imes 9.8 	imes 100$.$v^2 = 1960$.$v = \sqrt{1960} \approx 44.27 \, m s^{-1}$.Thus,the speed is approximately $44.2 \, m s^{-1}$.

$A$ stone is dropped from a cliff. Its speed after it has fallen $100 \,m$ is: (in $, m s^{-1}$)

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