What Angles Should a Fire Hose Nozzle Point to Land Water 2.0m Away?

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Homework Help Overview

The discussion revolves around determining the angles at which a fire hose nozzle should be aimed to achieve a horizontal distance of 2.0 meters for the water being projected at a speed of 7.8 m/s. The problem is situated within the context of projectile motion.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants express uncertainty about how to begin solving the problem, with some suggesting to consider the scenario as a typical projectile motion problem. There are discussions about finding component vectors and applying projectile motion equations, particularly the range equation.

Discussion Status

Several participants are exploring different aspects of the problem, including the application of known equations and the relationship between speed, distance, and angle. While some guidance has been offered regarding the use of projectile motion equations, there is no explicit consensus on the approach to take.

Contextual Notes

Participants mention feeling frustrated and uncertain about how to apply the equations of motion, indicating a potential gap in understanding the underlying concepts of projectile motion.

Sn0wPr0
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A fire hose held near the ground shoots water at a speed of 7.8 m/s.

At what angles should the nozzle point in order that the water land 2.0 m away


I don't even know where to start. Can anyone set me in the right direction?
 
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Forget about the fact that it's a stream of water and think about normal projectiles.
 
i just can't figure out how to find the component vectors, which is where i think i need to start.
 
Sn0wPr0 said:
A fire hose held near the ground shoots water at a speed of 7.8 m/s.

At what angles should the nozzle point in order that the water land 2.0 m away


I don't even know where to start. Can anyone set me in the right direction?

Do you know the equations for projectile motion?
 
yea, i have them in front of me but I'm having trouble applying them right now.

i'm so frustrated right now i just don't know where to start.
 
i'm starting to think it has something to do with the range equation. am i going in the right direction?

do i set it equal for sin?

(Vo^2/9.80)sin0=r
 
You know your speed, and you know your dX (horizontal distance) and you obviously know g. So use the equation with these variables and solve for the angle (theta).
 

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