As per your syllabus, (2D elastic between EQUAL masses, one at rest), the two final velocities make which angle with each other?
A45°
B60°
C180°
D90°
Answer & Solution
Correct answer: D. 90°
syllabus Ex 5.12: for equal masses with elastic glancing collision and one at rest, v_{1f} ⊥ v_{2f}.
Classic billiards/carrom result.
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