Two objects of mass 3 kg moving in the same direction collide elastically. If the initial velocities are (10i + 20j) and (-6i + 2j), and one of the balls moves (-5i + 10j) after the collision, what is the velocity of the second ball?
University of Ilorin PHY101 2025A past question
- (8i + 12j)
- (6i + 15j)
- (-2i + 5j)
- (5i + 10j)
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