On a frictionless surface, a block of mass M moving at speed v collides elastically with another block of same mass M which is infinitely at rest. After collision the first block moves at an angle θ to its initial direction and has a speed v/3. The second bolck’s speed after the collision is

Options

(a) 3/√2 v
(b) √3/2 v
(c) 2√2/3 v
(d) 3/4 v

Correct Answer:

2√2/3 v

Explanation:

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