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    Physics-
    General
    Easy

    Question

    The speed of the ball after the collision.

    1. eV cos q    
    2. V square root of fraction numerator cos to the power of 2 end exponent invisible function application theta left parenthesis 1 minus e right parenthesis to the power of 2 end exponent over denominator 4 end fraction plus sin to the power of 2 end exponent invisible function application theta end root    
    3. V square root of cos to the power of 2 end exponent invisible function application theta left parenthesis 1 plus e right parenthesis to the power of 2 end exponent plus fraction numerator sin to the power of 2 end exponent invisible function application theta over denominator 4 end fraction end root    
    4. V square root of fraction numerator cos to the power of 2 end exponent invisible function application theta left parenthesis 1 plus e right parenthesis to the power of 2 end exponent over denominator 4 end fraction plus sin to the power of 2 end exponent invisible function application theta end root    

    The correct answer is: V square root of fraction numerator cos to the power of 2 end exponent invisible function application theta left parenthesis 1 minus e right parenthesis to the power of 2 end exponent over denominator 4 end fraction plus sin to the power of 2 end exponent invisible function application theta end root

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