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JEE Main & Advanced Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति Question Bank Elastic and Inelastic Collision

  • question_answer
    A ball of weight 0.1 kg coming with speed 30 m/s strikes with a bat and returns in opposite direction with speed 40 m/s, then the impulse is (Taking final velocity as positive)            [AFMC 1997]

    A)          \[-0.1\times (40)-0.1\times (30)\]                          

    B)          \[0.1\times (40)-0.1\times (-30)\]

    C)          \[0.1\times (40)+0.1\times (-30)\]                        

    D)          \[0.1\times (40)-0.1\times (20)\]

    Correct Answer: B

    Solution :

             Impulse = change in momentum          \[m{{v}_{2}}-m{{v}_{1}}\]= \[0.1\times 40-0.1\times (-30)\]


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