4.1.4. Momentum Flux Changes

Try these first

1. 1.

   What is the formula for calculating inflow and outflow in a fluid system?

   Hint

   Think about the principle of mass conservation.

2. 2.

   Define momentum flux.

   Hint

   Consider the relationship between mass and velocity.

3. 3.

   What is the principle of mass conservation in fluid dynamics?

   • Mass is created in a closed system.
   • Mass is destroyed in a closed system.
   • Mass is conserved in a closed system.

   Hint

   Recall the fundamental law of conservation.

4. 4.

   Reynolds Transport Theorem relates momentum flux to what?

   • True
   • False

   Hint

   Think about its application in momentum studies.

5. 5.

   A jet of fluid with a density of 800 kg/m³ and velocity of 10 m/s strikes a barrier of area 0.05 m². Determine the force exerted by the jet on the barrier.

   Hint

   Use the concept of momentum flux in your calculations.

6. 6.

   If a spacecraft discharges fuel at a rate of 0.1 kg/s with a speed of 300 m/s, what is the thrust produced?

   Hint

   This formula relates closely to momentum conservation.