Physics

Physics

Problem

A rock is allowed to fall freely from rest for

3\,\text{s}

. With downward taken as positive and

g = 9.8\,\text{m/s}^2

, determine its speed at the end of the

3\,\text{s}

interval. a)

14.7\,\text{m/s}

b)

29.4\,\text{m/s}

c)

44.1\,\text{m/s}

d)

9.8\,\text{m/s}

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