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Published on May 2016 | Categories: Documents | Downloads: 47 | Comments: 0 | Views: 280
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Annoyance with Scribd:
I only wanted to download one document, which should be
everywhere on the internet yet I could only find here. Yet to
download it I needed to make an account and then pay $9 for a
single page or upload. This is quite ridiculous.
At least give a free trial that doesn’t require you to put your credit
card in.
To comply with scribd’s upload rule I will post something other than
a rant.
An equation I worked out because I was bored.
solve(0=860*sin(y)*x-9.8*x^(2) and 10000=860*cos(y)*x,x,y)|
0<y<((π)/(2))
It is a very basic equation for ballistics, currently set for an artillery
shell at range of 10’000m. x=flight time and y= firing angle. Change
the 860 to whatever muzzle velocity wanted and 10’000m to
distance wanted. This does not account for air resistance.
I made this equation due to the long walk home from school, I could
calculate distance given firing angle but I wanted an equation to
give me firing angle given distance. I am embarrassed it took me a
calculator to realise all I needed to do was make a simultaneous
equation. Instead of trying to work out a magical singular equation
in my head. (though Wikipedia tells me this is possible

)
(answer to above equation:
x=11.737747919796 and y=0.13691278105239 or
x=85.195218608624 and y=1.4338835457425)

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