A rigid ball of mass, m strikes a rigid wall at 60 ^ o and gets...

A rigid ball of mass, $m$ strikes a rigid wall at ${60}^{o}$ and gets reflected without any loss of speed as shown in the figure below. The value of impulse imparted by the wall on the ball will be
A rigid ball of mass, m strikes a rigid wall at 60 ^ o and gets reflected without any loss of speed as shown in the

Options

A $mV$
B $2mV$
C $\dfrac{mV}{2}$
D $\dfrac{mV}{3}$

Correct answer

A. $mV$

Step-by-step solution

A rigid ball of mass, m strikes a rigid wall at 60 ^ o and gets reflected without any loss of speed as shown in the

$\left|\overset{\to}{J}\right| = \left|\overset{\to}{P}2 - \overset{\to}{P}1\right| = 2mVcos\theta = mV .</p>$

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