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    http://filestore.aqa.org.uk/sample-p...1-QP-JUN16.PDF
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    In the paper question 6.3 the annihilation question, i don't understand why you would times the rest mass by 2, as annihilation is , energy = rest mass , however in the mark scheme they said that energy =2 rest mass. Mark scheme below.
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    http://filestore.aqa.org.uk/sample-p...W-MS-JUN16.PDF
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    (Original post by BonBon1)
    http://filestore.aqa.org.uk/sample-p...1-QP-JUN16.PDF
    -----------------------------------------------------------------------------------
    In the paper question 6.3 the annihilation question, i don't understand why you would times the rest mass by 2, as annihilation is , energy = rest mass , however in the mark scheme they said that energy =2 rest mass. Mark scheme below.
    -----------------------------------------------------------------------------------------------------------
    http://filestore.aqa.org.uk/sample-p...W-MS-JUN16.PDF
    I believe that the previous question mentions that two photons are produced and asks you to explain why (due to conservation of momentum, two photons travelling in opposite directions must be produced). So then you know that there are two photons produced, you simply carry forward this information into the next part of the question.
 
 
 
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