Build 2 stage Water bottle Rocket Step by Step through pictures.
Water rocket is actually an interesting play for people of all ages, not just kids and students even adults do enjoy this activity. They work based on a simple physics concept in which the water is forced out the bottom of the rocket by air pressure, and in doing so exerts an upward force pushing up on the rocket. This upward force cause the rocket to shoot upward at high speed.
This is an amazing water rocket designs, step by has shown below through picture.This is a two-stage water rocket.