A block of mass 'm' moving along a straight line with constant velocity $3 \overrightarrow{\mathrm{V}}$…
A block of mass 'm' moving along a straight line with constant velocity $3 \overrightarrow{\mathrm{V}}$ collides
with another block of same mass at rest. They stick together and move with
common velocity. The common velocity is
$\frac{3 \vec{v}}{2}$
$2 \vec{V}$
$\overrightarrow{3} \vec{V}$
$\vec{V}$
Solution
A block of mass $'m'$ moving along a straight line with constant velocity $3 \vec{v}$ collides with another block of same mass at rest. They stick together and move with common velocity. The common velocity is $\frac{3 \vec{v}}{2}$.
$(m+m) v_{2}=m \times 3 v$
$v_{2}=\frac{3}{2} \vec{v}$