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To derive pav^2, we take final velocity minus the initial velocity.

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+1 vote
in Fluid Mechanics by (118k points)
To derive pav^2, we take final velocity minus the initial velocity.

(a) True

(b) False

This question was posed to me in an online quiz.

The question is from Force Exerted by a Jet on a Stationary Flat Inclined Plate in portion Impact of Jets and Jet Propulsion of Fluid Mechanics

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Right answer is (b) False

Easy explanation: The rate of change of momentum in the direction of the force is given by the formula pav^2. Where p = Density of the fluid flow, a = acceleration of the fluid particle and v= velocity of the fluid flowing. To derive pav^2, we take initial velocity minus the final velocity.

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