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At the end of 2 seconds of free fall an object released from rest will have a speed of A. 5m/s B 10m/s C 15m/s D none of the above

  • Science -

    final velocity = initial velocity + (acceleration due to gravity x time)

    final velocity= 0 m/s +(-9.8 m/s^2)(2 s)

    final velocity = -19.6 m/s or 20 m/s

    answer (D)

  • Science -

    thank you I couldn't remember the formula

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