Question

A body falls freely from rest from a certain height. Which of the following is/are true about the body?

• A. It falls down with acceleration $g$.
• B. $t=$ $(\frac{2h}{g}{)}^{0.5}$
• C. Final velocity $v=$ $(2hg{)}^{0.5}$
• D. All the above

Answer 1

The correct option is D All the above

For freely falling body,

$a=g$

$u=0$

$v^2=u^2+2gs$

$v=\sqrt{2gh}$

$s=ut+1/2g{t}^2$

$t=\sqrt{\frac{2h}{g}}$