Question

a stone is dropped from the top of a building . Find (a) How long does it take to fall 20 m ? (b) How fast does it moves at the end of this fall? (c) What is its acccelaration after (i) 1 sec and (ii) 2 sec { take g= 10 m/sec^2}​

Answer 1

Answer:

Time to fall to 20m = 2sec

At the end of fall stone moves = v = 20ms⁻¹

Accelaration after 1 sec= 20 ms⁻²

Accelaration after 2 sec= 10 ms⁻¹

Explanation:

Find the explanation in the image.

Hope it is helpful.