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A 2kg snowball moving at 22 m/s collides with a 7kg snowman's head. The snowball sticks to the snowman's head knocking it off. How much mass does the combined object have after the collision? How fast is the combined object moving at after the collision?

  • Physics - ,

    m₁v =(m₁+m₂)u
    u= m₁v/(m₁+m₂)=2•22/(2+7)=4.9 m/s

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