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A Steel Ball Bearing of Mass M1 and Speed of Magnitude

Question 12

Multiple Choice

A steel ball bearing of mass m1 and speed of magnitude v1 has a head-on elastic collision with a steel ball bearing of mass m2 at rest. Rank the speed v1 of m1 relative to v2, the magnitude of the speed of m2, after the collision when: i) m1 > m2; ii) m1 = m2; and iii) m1 < m2.


A) v1 < v2; v1 < v2; v1 < v2
B) v1 < v2; v1 = v2; v1 > v2
C) v1 < v2; v1 > v2; v1 > v2
D) v1 > v2; v1 = v2; v1 < v2
E) v1 > v2; v1 > v2; v1 > v2

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