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Physics

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A rock is dropped from a sea cliff and the sound of it striking the ocean is heard 5.2 seconds later. If the speed of sound is 340 m/s, how high is the cliff?

  • Physics -

    distance = rate * time
    height = 5.2 * 340 = 1768m

    It should be as simple as that.

  • Physics -

    Michael, the time given is not the time for the sound traveling. See my post

  • Physics -

    The time given is the time of falling and the time of thesound going up.
    time sound= h*340
    time falling
    h= 1/2 g timefalling or
    time falling= 2h/g=5.2-h*340 solve for h

  • Physics -

    Bob - is "g" in your equation gravity?

  • Physics -

    Oh, sorry. I didn't mean to give wrong information.

  • Physics -

    g is the acceleration due to gravity, yes.

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