Question: Useful Equations: speed = distance/time average velocity = Ax/At average acceleration = Av/At g = 9.8 m/s2 Equations of Motion: Vf = vi + at

Useful Equations: speed = distance/time average velocity = Ax/At average acceleration = Av/At g = 9.8 m/s2 Equations of Motion: Vf = vi + at yf - yi = vit + (1/2)at2 v/2 = vi + 2a(y- vi) A rock is dropped from a cliff 30 m above the ground. a) How long does it take to hit the ground? b) Sketch its position versus time, velocity versus time and acceleration versus time graph

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