physics

posted by .

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.

  • physics -

    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

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    a fireman 50 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 30 degrees above the horizontal. If the speed of the stream as it leaves the hose is 40.0 m/s at what height will the …
  2. physics

    a fireman 50 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 30 degrees above the horizontal. If the speed of the stream as it leaves the hose is 40.0 m/s at what height will the …
  3. physics

    A fireman 46.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 30.0° above the horizontal. If the speed of the stream as it leaves the hose is 40.0 m/s, at what height will the …
  4. Physics

    A fireman, 45.1 m away from a burning building, directs a stream jet of water from a ground level fire hose at an angle of 34.1 degrees above the horizontal. The acceleration of gravity is 9.8 m/s^2. If the speed of the stream as it …
  5. physics help

    a fireman D=50 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 30 degrees above the horizontal. If the speed of the stream as it leaves the hose is 40.0 m/s at what height will …
  6. physics

    A fireman d = 39.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of èi = 25.0° above the horizontal as shown in the figure. If the speed of the stream as it leaves the hose is …
  7. physics

    Firemen are shooting a stream of water at a burning building. A high-pressure hose shoots out the water with a speed of 24.0{\rm m}/{\rm s} as it leaves the hose nozzle. Once it leaves the hose, the water moves in projectile motion. …
  8. Physics

    A fireman d = 33.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of θi = 21.0° above the horizontal as shown in the figure. If the speed of the stream as it leaves the hose …
  9. Physics

    A fireman, 43.7 m away from a burning building, directs a stream jet of water from a ground level fire hose at an angle of 31.3 degree above the horizontal. If the speed of the stream as it leaves the hose is 44.1 m/s, at what height …
  10. physics

    A fireman d = 56.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of θi = 24.0° above the horizontal as shown in the figure. If the speed of the stream as it leaves the hose …

More Similar Questions