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physics

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A ball rolls with a speed of 4.4 m/s toward the edge of a table that is 1 m above the floor. The ball rolls off the table.

a. How long is it in the air? s

b. How far out from the edge of the table does the ball hit the floor? m

  • physics - ,

    The ball after leaving the table
    takes part in two motions: horizontal uniform motion
    L = v(hor) •t,
    and vertical free fall
    H = gt^2/2,
    t = sqroot(2H/g) = sqroot(2•1/9.8) = 0.2 s.
    L = v(hor) •t = 4.4•0.2=0.88 m.

  • science - ,

    a ball rolls 5cm in 5 seconds what is the speed of the ball?

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