Question

A wooden block of mass $20\text{g}$is dropped from the top of the cliff $60\text{m}$high. Simultaneously a bullet of mass $20\text{g}$is fired from the foot of the cliff upwards with a velocity $60{\text{ms}}^{-1}$. The bullet and the wooden block will meet each other after time

Answer 1

Answer (3)


Here $a_{\text{rel}}=g-g=0$
$s_{\text{rel}}=\left(u_{\text{rel}}\right)t+\frac{1}{2}\left(a_{\text{rel}}\right)t^2$
$60=(60-0)t$
$\Rightarrow t=1s$