Question

A mass $m$ moves with a velocity $v$ and collides inelastically with another identical mass. After collision, the 1st mass moves with velocity $\frac{v}{\sqrt{3}}$ in a direction perpendicular to the initial direction of motion. Find the speed of the second mass after collision

• A. $\frac{2v}{\sqrt{3}}$
• B. $\frac{v}{\sqrt{3}}$
• C. v$\sqrt{\frac{2}{3}}$
• D. The situation of the problem is not possible without external impulse

Answer 1

Answer: (A)

$\frac{2v}{\sqrt{3}}$

$0=\frac{mv}{\sqrt{3}}-m{v}_1\sin \theta$

$v_1=\frac{2}{\sqrt{3}}v$