Parabolic Motion of a projectile

[wraithseeker]

Homework Statement

I'm trying to find a equation that will connect a object that is thrown to form a parabolic motion of a projectile. What I want to be able to sub it in is maxheight and displacement covered by the projectile

Homework Equations

I don't really know, maybe vi = vf + a*t?

The Attempt at a Solution

Went to google equations of it and some other sites, I won't list them all here because I searched almost all the sites.

http://www.ac.wwu.edu/~vawter/PhysicsNet/Topics/Vectors/ProjectilesMotion.html

 

[Pengwuino]

So you want to be able to say simply it's maximum height and its distance covered and find out its initial velocity and direction? Or the other way around?

 

[wraithseeker]

The maximum height and distance user inputted. Find initial velocity. Direction is calculated already.

 

[glueball8]

Do you mean using R={v_i^2\sin2\theta_i\over g} and h={v_i^2\sin^2\theta_i\over 2g} to get v_i ?