Physics

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A stone is dropped from the top of a cliff. It is seen to hit the ground below after 3.90 s. How high is the cliff?

  • Physics -

    Use Equations of Kinematics
    u = initial velocity = 0
    S = distance travelled in metres
    t = time in seconds
    g = acceleration due to gravity = -9.81 m/s²

    S = ut + (1/2)gt²
    Solve for S.

  • Physics -

    Thank you so much!

  • Physics :) -

    You're welcome!

  • Physics -

    A stone is dropped from the top of a cliff. The splash it makes when striking the water below is heard 4.5 s later.

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