HELP How much weight does my water rocket need?

AI Thread Summary
The discussion focuses on determining the optimal weight and water volume for a water rocket competing in a launch at 60 psi, aiming to hit a target 100 meters away. The rocket must be launched at a 45-degree angle, which significantly affects the calculations for distance and trajectory. Participants are encouraged to identify knowns and unknowns and utilize relevant physics equations to solve the problem. The importance of understanding the relationship between weight, water volume, and launch angle is emphasized for achieving accuracy. Engaging with the physics concepts will aid in developing a successful strategy for the competition.
Jwryan0504
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Hi all!
I have entered a a water rocket competition. The rockets in this competition will be launched at 60 psi. We have to launch the rockets horizontally and to hit a round landing site 100 meters(approximately 328.084 ft) away and 30 meters (approximately 98.4252 ft) wide. I am not good at physics, so can anyone help me? How much should my whole rocket should weight to hit the center of the target? And also, how much water should i fill in?
 
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Horizontally, as in 0 degree inclination? or horizontally as in "some angle in the direction of the target" That's a big difference.
 
Sorry, I forgot to add in: the rocket must be at a 45 degree angle from the ground. Thanks!
 
Well, what work have you completed so far?

Have you identified any useful equations?

State your knowns and unknowns, so you can visualize the problem and use what you know to develop a solution.
 

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