Question

A stone is released from the top of a tower of height 19.6m calculate it's final velocity
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Answer 1

Explanation:

Here, Initial velocity u=0 <br> final velocity v=? (to be calculated ) <br> Acceleration due to gravity

(Stone comes down ) <br> And Height h=19.6 m <br> Now ,we know that for a freely falling body : <br>

<br> So ,

<br>

<br>

<br> v=19.6 m/s <br> Thus the velocity of stone just before hitting the ground will be 19.6 metres per second .

Answer 2

Final velocity will be 0
Because the stone came at rest