SOLVING PROBLEMS

Determine the energy loss $($ h $)$ when water flows from a pipe with $4-$in ID $($inside diameter$)$ to the other one with $2-$in ID through a sudden contraction if the velocity of the flow in the larger pipe is $5f\frac{t}{s}.(2\mathrm{.}5$ points$)$

Note $1$: Acceleration due to gravify $($g$)$ is $32\mathrm{.}2\frac{}{s^2}$