Posted by BioBabe on Wednesday, October 1, 2008 at 8:32pm.
A stone is dropped in water from a bridge 44 cm above the water. Another stone is thrown straight down 1.0 s after the first one dropped. Both strike the water at the same time. What was the initial speed of the second stone?

12th grade Physics  bobpursley, Wednesday, October 1, 2008 at 8:38pm
first stone: .44=1/2 g t^2
second stone: .44=v(t1)+1/2 g (t1)^1
use equation 1) TO solve for t, then put it in equation 2) and solve for v. 
12th grade Physics  ziaul, Saturday, October 4, 2008 at 12:37am
who was the father of physics

12th grade Physics  Zainab Almosawi, Sunday, October 5, 2008 at 6:08pm
Galileo Galilei