1. Sep 26, 2008

### phys1618

1. The problem statement, all variables and given/known data

a student throws a water balloon vertically downward fromt he top of a building; the balloon leaves the thrower's hand with a velocity of 10 m/s.
1.what will be its velocity after falling for 2 seconds?
2.what will be its velocity after falling 10 meters?
3.If it moved a distance of 1 meter while int he throwers' hand, find it's accelereation while in his hand.

2. Relevant equations

d=(vi+vf)t
2

a= (vf-vi)/t
3. The attempt at a solution

I think i can get the answers to 1 and 2. I'm clueless on #3.
thank you for all help!!! greatly appreciated.

2. Sep 26, 2008

### LowlyPion

Your second equation will find the velocity after 2 seconds, but your first equation neglects to take into account the acceleration of gravity.

Consider using the relationship that vf2 = vi2 + 2a*x for part 2.

As to your third question, you have the distance, and initial V was at rest and final V is 10m/s so ... use the same equation to figure a.

3. Sep 27, 2008