physics

A penny falls from a windowsill 25.0 m above the sidewalk. How fast is the penny moving when it strikes the ground? (Remember that the velocity will be negative due to the downward motion of the penny)

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  1. vf^2=Vi^2+2gd

  2. a body traveling in a straight line and increasing in speed

    a body traveling in a straight line and decreasing in speed

    a body traveling in a straight line at constant speed

    a body standing still

    a body traveling at a constant speed and changing direction

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