A watering hose with a diameter of 2 cm is used to fill a 120 liter jar with water until it is full within 2 minutes. 1.25 m above the floor with the same flow rate find distance from water and nozzle.

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.