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Thread: What indicates if object will be reflected - certain example

  1. #1 What indicates if object will be reflected - certain example 
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    If I throw a small rock(1kg) at a big rock(100kg) the small rock is reflected; Let's say my weight is 80kg - if I would jump into a big rock instead of being reflected I would move in the same direction as a big rock. The big rock is heavier but it is not reflecting me - Why is that?


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    Forum Freshman pzkpfw's Avatar
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    A lot of it's going to do with the properties of the objects; not just their mass.

    Drop a 1 kg rubber ball onto concrete, or a 1 kg rock onto concrete - you'll get different results.


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    Genius Duck Moderator Dywyddyr's Avatar
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    Or 1kg of silly putty.
    A human isn't a "rigid" object.
    Therefore the collision is inelastic.
    (You might also want to take a look at Coefficient of restitution).
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    Malignant Pimple shlunka's Avatar
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    Quote Originally Posted by pzkpfw View Post
    A lot of it's going to do with the properties of the objects; not just their mass.

    Drop a 1 kg rubber ball onto concrete, or a 1 kg rock onto concrete - you'll get different results.
    holy hell I love that kitten.
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  6. #5  
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    So for a less mass object not being reflected after hitting greater mass object the collision must be always inealstic? Does the shape of an object indicates (partially) collision type ? (I mean to be more elastic or inelastic?)


    EDIT: I wonder if the human body in this example(80kg) would be made of steel, would it be reflected instead
    Last edited by fghf76; July 31st, 2014 at 03:43 PM.
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