Part a: explain why we do not measure the rate at which water flows out through a shower head in cubic meters per second? in your explanation, use reasoning based on appropriate units to model this situation. (5 points) part b: what are the two quantities that should be measured to find the rate at which water flows out of a shower head? explain how the rate can be determined. (5 points)

We have that the stream of water is coming out in small quantities; at most liters at a time since the stream has a width of around 10cm at most times. Hence, cubic meters per second is too large a unit to measure the small quantity of water going through the shower.
We have that we can calculate the rate if we know the surface area of the flow and the speed of the water. If one multiplies those 2 together, one gets the rate because the speed of water is pretty much how much a front of water is moving per second; if you multiply it by its surface area, you get how much a volume of water is moving.