Physics

Problem

A stone is projected vertically upward from the ground. It passes the same balcony on its way up after

2\,\text{s}

and again on its way down after

6\,\text{s}

. Taking

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

, calculate the initial speed of projection. a)

29.4\,\text{m/s}

39.2\,\text{m/s}

44.1\,\text{m/s}

40.0\,\text{m/s}