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NEET NEET SOLVED PAPER 2016 Phase-II

  • question_answer
    A rigid ball of mass m strikes a rigid wall at \[{{60}^{{}^\circ }}\] and gets reflected without loss of speed as shown in the figure below. The value of impulse imparted by the wall on the ball will be

    A)  mV                             

    B)  2mV

    C)  \[\frac{mV}{2}\]                                  

    D)  \[\frac{mV}{3}\]

    Correct Answer: A

    Solution :

    \[\left| \overset{\to }{\mathop{J}}\, \right|=\left| {{\overset{\to }{\mathop{P}}\,}_{2}}-{{\overset{\to }{\mathop{P}}\,}_{1}} \right|=2mV\,\cos \theta =mV\]


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