Here are our jaw dropping results :

We found stuff that didn't really excite us but it was exciting to find out something new. Can you guess which object went the farthest?

Big rock, 1st try; 23 feet, 2nd try; 25 feet, 3rd try; 21 feet

Small rock, 1st try; 24 feet, 2nd try; 23 feet, 3rd try; 32 feet

Golf ball, 1st try; 12 feet, 2nd try; 15 feet, 3rd try; 11 feet

Fake golf ball, 1st try; 20 feet, 2nd try; 21 feet, 3rd try; 25 feet

Lego man, 1st try, 23 feet, 2nd try; 21 feet, 3rd try; 25 feet

Lego cube, 1st try; 21 feet, 2nd try; 18 feet, 3rd try; 16 feet

After we did the experiment and results and what-not.... we knew our experiment had mass in it so we weighed the objects.  Here are the masses of objects :

Big rock, 59g

Small rock, 18g

Golf ball, 42g

Fake golf ball, 8g

Lego man, 4g

Lego cube, 14g