Question

why it is difficult for a fireman to hold a hose which ejects large amounts of water at high velocity

Answer 1

because of its recoil

Answer 2

Explanation:

When large amount of water is ejected from a hose at a high velocity, according to Newton’s Third Law of Motion, water pushes the hose in backward direction with the same force. Therefore, it is difficult for a fireman to hold a hose in which ejects large amount of water at a high velocity.