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JEE Main 2005

Exam: JEE Main
Year: 2005
Subject: Physics
Chapter: Center of Mass, Momentum and Collision

JEE Main 2005 · Physics · Center of Mass, Momentum and Collision

A mass ' m ' moves with a velocity v and collides inelastically...

A mass '

m

' moves with a velocity

v

and collides inelastically with another identical mass. After collision the

1^{\text{st }}

mass moves with velocity

v / \sqrt{3}

in a direction perpendicular to the initial direction of motion. Find the speed of the

2^{\text{nd }}

mass after collision A mass ' m ' moves with a velocity v and collides inelastically with another identical mass. After collision the 1^ st

A mass ' m ' moves with a velocity v and collides inelastically with another identical mass. After collision the 1^ st

Options

Av
B $\sqrt{3} v$
C $2 v / \sqrt{3}$
D $v / \sqrt{3}$

Correct answer

C. $2 v / \sqrt{3}$

Step-by-step solution

A mass ' m ' moves with a velocity v and collides inelastically with another identical mass. After collision the 1^ st

m v=m v_1 \cos \theta

0=\frac{m v}{\sqrt{3}}-m v_1 \sin \theta

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

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