Answer:
Force, |F| = 2100 N
Explanation:
It is given that,
Water from a fire hose is directed horizontally against at a rate of 50.0 kg/s, [tex]\dfrac{m}{t}=50\ kg/s[/tex]
Initial speed, v = 42 m/s
The momentum is reduced to zero, final speed, v = 0
The relation between the force and the momentum is given by :
[tex]F=\dfrac{p}{t}[/tex]
[tex]F=\dfrac{mv}{t}[/tex]
[tex]F=50\ kg/s\times 42\ m/s[/tex]
|F| = 2100 N
So, the magnitude of the force exerted on the wall is 2100 N. Hence, this is the required solution.
