A fire hose held near the ground shoots water at a speed of 6.7 m/s.At what angles should the nozzle point in order that the water land 2.0 m away?
Did you consider pipe friction based on the velocity and the friction attributed to elbows and other fittings including valves in bernoulli's equation?
The 2015 Darwin Award goes to . (insert your name)
Channel lock pliers. There is a picture in the link. Al
If you are dealing with Garden Hose Thread Fittings, which seal on a gasket they should be relatively easy to unscrew. UNLESS they are made of dissimilar metals and have been in contact long enough (many months) to develop Dielectric Corrosion effectively fusing the two together. If dielectric corrosion has occurred some discoloration (often White) will be seen between the threads, and it will take significant effort to break them free. That effort might damage or destroy the fitting, depending on the extent of the corrosion. My suggestion is to get some Liquid Wrench or other Penetrating Thread Lubricant, and follow the directions to free up the connection prior to applying extensive pressure or torque. A Strap Wrench is often used to tighten round pipes where damage to the pipe is not an option. The Leather Strap wraps around the pipe providing virtual 360 degree contact. A Chain Wrench would provide more positive grip, but is more likely to do damage.
