Question

A stone drop from height 'h' reaches at earth surface in 1 sec. If the same stone is taken to moon and dropped freely from height h, then it will reach the surface of moon in ..... sec

• A. $\sqrt{6}sec$
• B. $9sec$
• C. $3sec$
• D. $6sec$

Answer 1

Answer: (A)

$\sqrt{6}sec$

We know,

Acceleration due to gravity on moon$=\frac{g}{6}$

$g=$aceleration due to gravity on earth.

$h=\frac{1}{2}g{1}^2$

$h=\frac{1}{2}\times \frac{g}{6}{t}^2$

$t^2=6$

$t=\sqrt{6}$

Option $\text{A}$ is the correct answer