InterviewSolution
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InterviewSolution
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Two particles moving initially in the same direction undergo a one-dimensional, elastic collision. Their relative velocities before and after the collision are Vector v1 and Vector v2. Which of the following is not correct?(a) | Vector v1 | = | Vector v2 |(b) Vector v1 = - Vector v2 only if the two are of equal mass.(c) Vector v1 . Vector v2 = - | Vector v1 |2(d) | Vector v2 . Vector v1 | = Vectoe v2|2 |
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Answer» Correct Answer is: (b) Vector v1 = - Vector v2 only if the two are of equal mass. For a head-on elastic collision, relative velocity after collision = - relative velocity before collision. This is independent of the masses of the particles. |
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