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Q. A particle is projected at an angle of $30^{\circ}$ with the horizontal with a momentum P. At the highest point its momentum is

COMEDKCOMEDK 2012

Solution:

$P = mu $
$P^1 = m ( u \, \cos \theta)$
$ = mu \frac{\sqrt{3}}{2} = \frac{P \sqrt{3}}{2}$