A Body Is Projected Vertically Upwards and Moves So That $s=u t-16 t^{2}$

Short Answer

A body is projected vertically upwards and moves so that $s=u t-16 t^{2}$ , where $s$ is the distance ( $\left.\mathrm{m}\right), t$ is the time $(\mathrm{s})$ , and $u$ is the initial velocity of the body $(\mathrm{m} / \mathrm{s})$ . Find the time it takes for a body to rise 275 metres, if its initial velocity is $150 \mathrm{~m} / \mathrm{s}$ .