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    Could someone please help me figure out where I went wrong. I attached the question and my working below.

    I've made an error somewhere in question c). I get the red ball to be traveling at 2.5ms-1 and the blue ball at 4.33ms-1. However, the book says it should be 1.30ms-1 and 0.75ms-1 respectively.

    Masses have been cancelled both side of the equation because both balls weigh the same.

    Thanks!
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    You're right, the book's wrong.

    btw do you spot anything odd about section b?
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    Thanks! I spent way too long thinking I messed up.

    I hadn't noticed until you said. Is it that the red ball is shown to move less distance per unit of time than the blue ball, which would contradict the question?
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    (Original post by Xenopsychosis)
    Thanks! I spent way too long thinking I messed up.

    I hadn't noticed until you said. Is it that the red ball is shown to move less distance per unit of time than the blue ball, which would contradict the question?
    Yep.
 
 
 
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