A particle of mass \( m \) strikes a wall with speed \( v \) at an ...

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A particle of mass \( m \) strikes a wall with speed \( v \) at an angle \( 30^{\circ} \) with the wall elastically as shown in the
\( \mathrm{P} \) figure. The magnitude of impulse imparted to the ball

W by the wall is
(1) \( m v \)
(2) \( m v / 2 \)
(3) \( 2 m v \)
(4) \( \sqrt{3} m v \)
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