A fireman, 29.1 m away from a burning building, directs a stream of water from a ground level fire hose at an angle of 48.5° above the horizontal. If the speed is 51.6 m/s, at what height will the stream of water hit the building?

Answer 1

Friction is a big factor in water streams in the air. Ignoring friction,

hf=hi+vi'*t-4.9t^2

where t can be found by the horizontal

29.1=vi" * t
where
vi' (vertical)=51.6*sin48.5
vi" (hoizontal)=51.6*cos48.5