question_answer 27)

A stream of water flowing horizontally with a speed of  gushes out of a tube of cross-sectional area  and hits at a vertical wall nearby. What is the force exerted on the wall by the impact of water, assuming it does not rebound ?  

Answer:

Here   Density of water m = Mass of water gushed out per second   = Area  velocity  density Force exerted by the wall on water, Force exerted on the wall by the impact of water,  .