This project was considered the final project and final grade in our physics class. Our project was to build a water rocket that will launch and keep a tennis ball in the air for 30 seconds. Our job was to build the rocket and keep the tennis ball in the air without it hitting the ground. Unfortunately it was a lot harder then it seemed. It took us about 4 trials before we were able to successfully keep the tennis ball in the air.

Step 1: Materials

Materials used to build our rocket successfully:
1) 3 2-Liter Bottles
2) Tennis Ball
3) Garbage Bag
4) Cardboard Fins
5) String
6) Duct Tape
7) Paper Towel Tube
8) Water
Hi <br> <br>Did you take any video of your launches? If so please post one or two. I'd love to see your chute deploy. My sons and I have launched several water rockets but never tried a parachute. We also have not attempted using 2 bottles together. Maybe this summer we will give it a go. <br>Good job on your project! <br>
Very Bad.. Needs user made images. F-
how do u make the launcher??? it doesn't make sence. &gt;:(
should be an 'ible, not a show and tell. you can use a slideshow for that. Also, add ur own pics
not good.
how do you launch it
how do you launch it

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