Question

a stone is dropped from the top of tower of tower 32.40 metre high find out the time it takes to reach the ground and the velocity with which it strikes the ground (g=9.80metre per second square ​

Answer 1

time taken is given by formula

$\sqrt{2h \div g}$

where h is the height of object from ground. Time taken comes out to be 2.571429 s

and final velocity is given by

$\sqrt{2gh}$

which comes out to be 25.2 m/s.

hope it helps.