Decide on three things that you think might affect the range of a projectile, and then collect some data using the simulation below to make a claim about whether or not it affects the range of the projectile.
Be specific about your controls and your methodology (protocol)
Take good data (does a picture of the data - a graph - show the relationship?)
use this link:
http://phet.colorado.edu/en/simulation/projectile-motion
or click on this picture