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Newton's Laws for System of Particles

A rifle bulle...

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A rifle bullets loses 1/20th of its velocity In passing through a plank. Assuming that the plank exerts a constant regarding force, the least number of such planks required just to stop the bullet is

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Q. A rifle bullets loses

(\frac{1}{20}) t h

of its velocity in passing through a plank. Assuming that the plank exerts a constant retarding force, the least number of such planks required just to stop the bullet is:

Q. A rifle bullet loses 1/20th of its velocity in passing through a plank. Assuming constant resistive force, the least number of such planks required just to stop the bullet is :

Q. A rifle bullets losses

(\frac{1}{20}) t h

of its velocity in passing through a plank. Assuming that the plank exerts a constant retarding force, the least number of such planks required just to stop the bullet is

Q. A rifle bullet loses

1 / 20^{t h}

of its velocity in passing through a plank. The least number of such planks required just to stop the bullet is

Q. A rifle bullet loses

{\frac{1}{20}}^{t h}

of its velocity in passing through a plank. The least number of such planks required just to stop the bullet is

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