Figure 5 - The water rocket launched. Due the exceeding amount of pressure the bottles could handle, the water rocket flies away from the launcher releasing all the water contained inside, making the rocket push even better.
<a href="//commons.wikimedia.org/wiki/User:Joo_Nath" title="User:Joo Nath">Joo Nath</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>