Question

In a streamline flow.

• A. The speed of the particle always remains same
• B. The velocity of the particle always remains same
• C. The kinetic energies of all the particles arriving at a given point are same
• D. The momenta of all the particles arriving at the given point are same

Answer 1

Answer: (A)

The speed of the particle always remains same

Streamline flow are a family of curves that are instantaneously tangent to the velocity vector of the flow.These show the direction a massless fluid element will travel in at any point in time.

so by the defination we can say that at any point kinetic energy will be same and if kinetic energy is same then moments(momenta) is also same at that point.