Deriving Velocity For Projectiles

[jerromyjon]

I have a projectile that can only launch at 30 degrees and a target exactly 100m away at the same elevation on flat ground with 1g (9.8m/s² meters per second per second?) What velocity without (then with) air resistance would the "muzzle velocity" need to be? (with a droplet shape for resistance)

I can't even figure out how to get started with a minimum mass and velocity to "just make it".

 

[Bystander]

https://www.physicsforums.com/threads/projectile-motion-help.787618/