Asked by Vanessa

Water leaves the fireman's hose at rate of 7.2 kg/s and with a velocity of 21 m/s. Calculate the force exerted by the water jet on the wall of a building.

Answered by drwls
Splashing agaist the wall will reduce the water's forward momentum to zero. Ignore any backward momentum.

The force will be
momentum flow rate
= (mass flow rate) * V
It will be in Newtons
Answered by Anonymous
151.2
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