A stone is thrown from ground level and lands back at the same level after covering a…

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A stone is thrown from ground level and lands back at the same level after covering a horizontal range of

60\,\text{m}

in a total time of flight of

3.0\,\text{s}

. Calculate: (i) the initial speed of projection, and (ii) the angle of projection with the horizontal. Take

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