Question

Jake drops a book out of a window from a height of 10 meters. At what velocity does the book hit the ground?

Answer 1

G = 9.81 m/sec^2)     g = 9.81$\frac{meters}{ second^{2} }$

Solving for velocity : 

$velocity^{2}$ = 2gh 
v = $2gh^{ \frac{1}{2} }$
v = (2 x 9.81 x 10)^1/2 
v = 196.2 m/sec (answer)