Physics (AS & A Level) · Feb / March 2017 · Paper 12 · Question 9

Water flows out of a pipe and hits a wall. When the jet of water hits the wall, it has horizontal velocity v and cross-sectional area A. The density of the water is ρ. The water does not rebound from the wall. What is the force exerted on the wall by the water?

1. Aρv/A
2. Bρv²/A
3. CρAv
4. DρAv²

As printed in the paper