A boy drops a stone from a cliff reaches the ground in 8 sec.find the final velocity of stone and the height of the cliff.

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Solution

$D e a r s t u d e n t, F i n a l v e l c o i t y = u + g t v = 0 + 10 \times 8 v = 80 m / s H e i g h t (H) = 0 + \frac{1}{2} \times 10 \times 8 \times 8 = 320 m R e g a r d s$

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A boy drops a stone from a cliff reaches the ground in 8 sec.find the final velocity of stone and the height of the cliff.

Dear student,Final velcoity=u+gtv=0+10×8v=80m/sHeight (H)=0+12×10×8×8=320mRegards

$D e a r s t u d e n t, F i n a l v e l c o i t y = u + g t v = 0 + 10 \times 8 v = 80 m / s H e i g h t (H) = 0 + \frac{1}{2} \times 10 \times 8 \times 8 = 320 m R e g a r d s$