(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

a fire hose sprays water with an initial velocity of 40ft/s at an angle of 60 degrees to the horizontal. Find the minimum initial velocity to hit a point on a building 15 feet to the right and 16 feet up.

3. The attempt at a solution

these are my equations but i feel like im missing something b/c im not sure how i would solve for velocity

r(t)=(z*cos60)T i + (z*sin(60))-16t^2) j

r'(t)=z*cos60) i + (z*sin(60)-32T) j

r''(t)=-32j

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Finding the intial velocity using vectors

**Physics Forums | Science Articles, Homework Help, Discussion**