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[" 16.A ball of mass "0.1kg" is thrown a...

[" 16.A ball of mass "0.1kg" is thrown against a wall.It "],[" strikes the wall normally with a velocity of "30ms^(-1)],[" and it rebounds with a velocity of "20ms^(-1)" .Caleulate the "],[" impulse of the foree exerted by the wall on the ball."]

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