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QAIPM-2015-Ph-1248: NEET 2015 Physics - Class 11 AIPM-2015-Ph-1248 Solution: On a frictionless surface a block of mass M moving at speed v…

On a frictionless surface a block of mass M moving at speed v collides elastically with another block of same mass M which is initially at rest. After collision the first block moves at an angle

\theta

to its initial direction and has a speed

\frac{v}{3}

. The second block's speed after the collision is

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

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

\frac{3}{4}v

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

Multiple Choice Options

A ${3 \over {\sqrt 2 }}v$ 2 _ 3 _ v
B ${{\sqrt 3 } \over 2}v$ 2 3 _ _ v
C ${{2\sqrt 2 } \over 3}v$ 3 2 2 _ _ v
D ${3 \over 4}v$ 4 3 _ v

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