logo

Ask Questions, Get Answers

X
 
Home  >>  JEEMAIN and NEET  >>  Physics  >>  Class11  >>  Motion in a Straight Line

If a ball is thrown vertically upwards with speed u, the distance covered during the last t second of its ascent is

$\begin{array}{1 1}(A)\;(u+gt) t \\(B)\;ut\\(C)\;\frac{1}{2} gt^2 \\(D)\;ut-\frac {1}{2}gt^2\end{array} $

very welll answered.....meena.p
Download clay6 mobile app

1 Answer

$S_{max}=ut_0 -\large\frac{1}{2}$$gt_0^2$
and $S= u(t_0 -t) -\large\frac{1}{2}$$g(t_0 -t)^2$
$d= S_{max}-S=ut -\large\frac{1}{2}$$g [t_0^2-(t_0-t)^2] $
$\quad= \large\frac{1}{2}$$gt^2$
Hence C is the correct answer.
answered Jul 18, 2014 by meena.p
 

Related questions

...
X