Question

An object is released from some height. Exactly after one second, another object is released from the same height. The distance between the two objects exactly after two seconds of the release of the second object will be

• A. $4.9m$
• B. $9.8m$
• C. $19.6m$
• D. $24.5m$

Answer 1

The correct option is D $24.5m$

let $s_1$ be the distance travelled by first object released

similarily $s_2$ for 2nd object

$s_1=\frac{g\times 3^2}{2}$

$s_1=\frac{9g}{2}\dots \left(1\right)$

$s_2=\frac{g\times 2^2}{2}$

$s_2=2g\dots \left(2\right)$

$\left(1\right)-\left(2\right)$

$s_1-s_2=\frac{5g}{2}$

$s_1-s_2=24.5m$