# Projectile Motion of fire hose

1. Sep 26, 2007

### Sn0wPr0

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?

2. Sep 26, 2007

### Proggle

Forget about the fact that it's a stream of water and think about normal projectiles.

3. Sep 26, 2007

### Sn0wPr0

i just can't figure out how to find the component vectors, which is where i think i need to start.

4. Sep 26, 2007

### FedEx

Do you know the equations for projectile motion?

5. Sep 26, 2007

### Sn0wPr0

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.

6. Sep 26, 2007

### Sn0wPr0

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

7. Sep 26, 2007

### shawshank

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).