Physics

Problem

A stone is thrown with speed

25\,\text{m s}^{-1}

at an angle

60^{\circ}

to the horizontal. Using

g = 10\,\text{m s}^{-2}

, determine the time (to two significant figures) taken to reach half of its maximum height during the upward journey. a)

1.08\,\text{s}

3.70\,\text{s}

0.63\,\text{s}

0.49\,\text{s}