# Homework Help: Online Homework due by 12 AM tonight

1. Oct 16, 2007

### icecubefosho

1. The problem statement, all variables and given/known data
During World War I, the Germans had a gun
called Big Bertha that was used to shell Paris.
The shell had an initial speed of 1.13 km/s at
an initial inclination of 42.4Degrees to the horizontal.
The acceleration of gravity is 9.8 m/s2 :
How far away did the shell hit? Answer in
units of km.

How long was it in the air? Answer in units
of s.

----------------------------------------------------------------

An autographed baseball rolls off of a 0.81 m
high desk and strikes the floor 0.28 m away
from the desk.
The acceleration of gravity is 9.81 m/s2 :
How fast was it rolling on the desk before it
fell off?

----------------------------------------------------------------

2. Relevant equations
I don't know

3. The attempt at a solution
I'm not gonna try an answer and get deducted points from this online HW system. Please answer first and then we can discuss these later. Hopefully later tomorrow. I have my PSATS tomorrow and I really need to finish this up and study for em. Thanks

2. Oct 16, 2007

### hage567

Doesn't mean you can't show us your work. We will tell you if you're doing things right.

3. Oct 16, 2007

### icecubefosho

I can't show the work if I don't know the equations

4. Oct 16, 2007

### Pyrrhus

Open your textbook and study the chapters then come back to us with an attempt.

5. Oct 16, 2007

### icecubefosho

I was never given a Pre-AP Textbook when I went advanced from Academic. My Academic book is poorly written as if its more like a Physics for Dummies book

6. Oct 16, 2007