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## Homework Statement

A shell is fired with a muzzle velocity of 350ms/s at a target 1000m away. Calculate two angles at which the shell can be fired .

## Homework Equations

I think these equations might help...

v=u+at

s=ut+1/2at^2

v^2=u^2 + 2as

Hope these eqations are right.

## The Attempt at a Solution

I thought about maybe this way:

cos(theta)=...

Sorry that is as far as I can go...

Thanks for any help.