We did an experiment because we thought...  It would be cool if we did something with our catapult!!!  Here is our experiment...:

We though that does it really matter the weight and the size of the object will make it go farther or not?   Well lets do an experiment!!!  We launched a small rock, a big rock, a fake golf ball, a golf ball, a Lego man and a Lego cube three times each and sat back and watched.

To the left you can see our result page..... (the link)