Projectile motion: Big Bertha shell and rolling baseball

[icecubefosho]

Homework Statement

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.

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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? Answer in units of m=s.

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Homework Equations

I don't know

The Attempt at a Solution

I'm not going to 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

 

[hage567]

I'm not going to try an answer and get deducted points from this online HW system.

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

 

[icecubefosho]

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

 

[Pyrrhus]

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

 

[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

 

[hage567]

Well if equations are all you need: https://www.physicsforums.com/showpost.php?p=905663&postcount=2

There are lots of threads here on these kinds of questions. Looking through some of them might help you too.