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22 January, 21:50

A rock at rest falls off a tall cliff and hits the valley below after 3.5s. What is the rocks velocity as it hits the ground

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Answers (2)
  1. 22 January, 23:21
    0
    T = 3.5 secs

    Velocity (v) = g * t = 10 m/s^2 * 3.5 sec = 35 m/s
  2. 23 January, 01:09
    0
    V = u + at

    u=0 (rest); a=gravitational acc (g) = 10

    v = 0 + 10 (3.5) = 35m/s
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