Two identical balls A and B having velocities of 0.5 m/s and –0.3 m/s respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be

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Q:2

–0.5 m/s and 0.3 m/s

0.5 m/s and –0.3 m/s

–0.3 m/s and 0.5 m/s

0.3 m/s and 0.5 m/s

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This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements.
If two springs S₁ and S₂ of force constants k₁ and k₂, respectively, are stretched by the same force, it is found that more work is done on spring S₁ than on spring S₂.
Statement 1 : If stretched by the same amount, work done on S₁, will be more than that on S₂
Statement 2 : k₁ < k₂

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