Question

In a streamline flow,
(a) the speed of a particle always remains the same.
(b) the velocity of a particle always remains the same
(c) the kinetic energy of all the particles arriving at a given point are the same.
(d) the momenta of all the particles arriving at a given point are the same.

Answer 1

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The answer is option A

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Answer 2

Answer ⇒ Option (c). and (d).

Explanation ⇒ In Stream line flow, velocity of each partcile at at point is same. I mean to say that, velocity for diferent particles is same at fixed points.

But at different points, velocity will different but this different velocity will be same for each particle crossing it.

Now, when Velocity at an fixed point is same, this means, kinetic energy is also same, because the pass of the different fluid particles are approximately same.

Also, there moment of Inertia which depends upon mass, and distance will also be same, because we are here talking about fixed points, hence distance is same, and mass of all fluid particles is approximately same.

Hence, Option (c). and (d). is correct.

Hope it helps.