Hmm... Water emerges horizontally from a pipe at 4m/s. It travels to a wall 2m away. How far down the wall does the jet hit?
Well, i'm not sure if I should use x=ut, but I haven't got time, and to get time, t=d/s. Which would make it 0.5s. But you have to go 0.5 x 4, which is 2m...
Uh... The other is x=0.5(gt²). So... that would be 0.5(9.81x0.5²) which gives...2.4525x0.5, which is 1.22625m!