Imagine a fluid flowing in a set of cylindrical pipes, as shown in the figure to the right. If the diameter of the pipe at position S1 is 10 centimeters and the fluid velocity (V1) is 2 m/s, what volume of fluid flows through the pipe in 1 second?

Assume that the fluid has a density of 1000 kg/m^3. What is the kinetic energy of the volume of fluid that passes through the pipe in 1 second?

If the diameter of the pipe at position S2 is 20 centimeters, what is the kinetic energy of the fluid that passes through the pipe in 1 second at position S2?

How much does the pressure in the pipe change between position S2 and position S1?