Respuesta :

The overall momentum of the ball is 100kgm/s.

The impact on the induced velocity in the propeller plane is most pronounced close to the blade tips. The original blade element momentum theory does not account for the effect of vortices emitted from the blade tips into the slip stream on the induced velocity field. The induced velocity dispersion along the propeller is greatly influenced by these tip vortices, which produce a number of helical structures in the wake. It uses a tip-loss or correction factor, F, to make up for this shortcoming.

[tex]P= Mv\\\\P=25 * 4\\\\P=100Kgm/s[/tex]

To learn about momentum -

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