# I need help in a simple physics problem

1. Sep 25, 2007

### Palmtree Panic

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

You and your friend throw balloons ¯lled with
water from the roof of a several story apart-
ment house. You simply drop a balloon from
rest. A second balloon is thrown downward
by your friend 3:8 s later with an initial speed
of 74:48 m=s. They hit the ground simultane-
ously.
The acceleration of gravity is 9:8 m=s2 : You
can neglect air resistance.
How high is the apartment house? Answer
in units of m.

2. Relevant equations

idk

3. The attempt at a solution

too many wrong attempts

2. Sep 25, 2007

### hage567

Show us one, so we can see what you're thinking.

3. Sep 25, 2007

### Palmtree Panic

Or you could just give me the answer.

4. Sep 25, 2007

### hage567

No, I can't. That's against forum rules. We aren't a homework service. You must do the work, we can only guide you.

5. Sep 25, 2007

### Palmtree Panic

I do not know what equation to use. Can someone help me with that?