Water Moving Through a Fire Hydrant with an Internal Cross-Sectional

Multiple Choice

Water moving through a fire hydrant with an internal cross-sectional area of about 20 sq. in. goes into a fire hose with a cross-sectional area of about 5 sq. in. Which of the following is the best estimate of the change in speed of the water?

A) The speed of the water in the hose is 0.25 times the speed of the water in the hydrant.
B) The speed of the water in the hose is 0.5 times the speed of the water in the hydrant.
C) The speed of the water in the hose is 2 times the speed of the water in the hydrant.
D) The speed of the water in the hose is 4 times the speed of the water in the hydrant.