Question

Write the equation of motion for a freely falling body.

Answer 1

A freely falling body always experience a downward acceleration $g$ which we call as acceleration due to gravity.

Thus acceleration of freely falling body $a=g=9.8$ $m/s^2$ (Taking downward direction to be positive)

Initial speed of that body $u=0$

Equations of motion :

(i) : $v=gt$

(ii) : $S=\frac{1}{2}g{t}^2$

(iii) : $v^2=2gS$