Question

A boy standing near the edge of a cliff 125 m above a river throw a stone downward with a speed of 10 ms. find
A. with what speed will the stone hit water and
B. how long will it take to descend

Answer 1

a) 9ms
b) t=d/s
$125 \div 10$
$\frac{25}{2}$
in mixed
$12 \ \frac{1}{2}$