Question

A ball is dropped from a tower touches the ground in 8seconds , Then the velocity of ball is

Answer 1

$\tt{Here \ is \ the \ answer \ :-}$

$\tt{Given \ :-}$

$\tt{u \ = \ 0 \ m/s}$

$\tt{t \ = \ 8 \ s}$

$\tt{a \ = \ + \ 9.8 \ m/s^2}$

$\tt{Using \ equation \ of \ motion,}$

$\tt{v \ = \ u \ + \ at}$

$\tt{v \ = \ 0 \ + \ (9.8)(8)}$

$\tt{v \ = \ 78.4 \ m/s}$

$\tt{Hope \ this \ helps.}$