A ball B, of mass M moving northwards with velocity v collides elastically with another ball...

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A ball B, of mass M moving northwards with velocity v collides elastically with another ball B₂ of same mass but moving eastwards with the same velocity v. Which of the following statements will be true (a) B, comes to rest but B₂ moves with velocity √√2 v. (b) B, moves with velocity √√2 v but B₂ comes to rest. V (c) Both move with velocity- in north east direction. √2 (d) B, moves eastwards and B₂ moves north wards. A ball B, of mass M moving northwards with velocity v collides elastically with another ball B₂ of same mass but moving eastwards with the same velocity v. Which of the following statements will be true (a) B, comes to rest but B₂ moves with velocity √√2 v. (b) B, moves with velocity √√2 v but B₂ comes to rest. V (c) Both move with velocity- in north east direction. √2 (d) B, moves eastwards and B₂ moves north wards.