• Time of Travel (Trial 1) = 0.527 s • Time of Travel (Trial 2) = 0.569 s Time of Travel (Trial 3) = 0.537 s Acceleration of a Freely-Falling Object Time of Fall (s) Value of g Height of Drop (cm) Trial 1 Trial 2 Trial 3 Average (m/s²) Percent Error (%) (A) (B) At what height in (A) must the plastic ball be dropped such that its experimental acceleration is equal to the standard value of acceleration due gravity? 10.7 cm O 267 cm 66.1 cm O 145 cm O O O

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.