Question

explain why it is difficult for a Fireman to hold a hose which ejects large amount of water at the bed

Answer 1

the water comes out of the hose at a very high force ,according to newtons third law of motion every force has an equal and opposite reaction so the water also exerts a large force in the backward direction.hence it is difficult for  a fireman to hold a hose which ejects a large amount of water at the bed.

Answer 2

the water come from hose is very high force so it push the fire fighters back side