In riot control, the riot squad uses a water hose that shoots water at a rate of 5 m/s and volume of 30 L/s. What is the average force exerted on a person assuming that the water splashes sideways in all directions? The density of water is 1000 kg/m3.

The average force exerted on a person assuming that the water splashes sideways in all directions is 150 newtons.

Explanation:

From Fluid Mechanics and Newton's Laws we know that water stream is an example of a variable mass system at constant speed and the magnitude of the net force done by the water splash (), measured in newtons, is given by the following expression:

(Eq. 1)

Where:

- Density of water, measured in kilograms per cubic meter.

- Volume flow rate, measured in cubic meters per second.

- Flow velocity, measured in meters per second.

If we know that , and , the average force exerted on a person is:

The average force exerted on a person assuming that the water splashes sideways in all directions is 150 newtons.

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid

f is prop to m1xm2 double m1 double force