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A ball rolls off a tabletop 0.900 m above the floor and lands on the floor 2.60 m away from a point that is directly under the edge of the table. At what speed did the ball roll off of the table?

I would really appreciate it if someone could explain to me how the problem is worked out.

  • Physics -

    This ball fell during t=sqrt2h/g) =sqrt(2•0.9/9.8)=0.43 s
    Horizontal motion (v(x)=const) =>
    L=v(x) •t
    v(x)=L/t=2.6/0.43=6.1 m/s

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