Exam

NEET

Year

2003

Subject

Physics

Chapter

Motion in One Dimension

NEET 2003 · Physics · Motion in One Dimension

If a ball is thrown vertically with speed u , the distance covered...

If a ball is thrown vertically with speed $u$, the distance covered during the last $t$ seconds of its ascent is:

Step-by-step solution

Let time of flight be $T$, then $T=\frac{u}{g}$ Again Let $h$ be the distance covered during last ' $t$ ' second of its ascent. $\therefore$ Velocity at point $\mathrm{B}=V_B=u-g$ $(T-t)$ $=u-g\left(\frac{u}{g}-t\right)=g t$ $\Rightarrow h=V_B t-\frac{1}{2} g t^2$