Before collision, the velocity vectors of two bodies (each moving initially) define an initial plane. After collision
A) the motion of both bodies must be confined to the initial plane.
B) the motion of both bodies must be in a plane differing from the initial plane.
C) whether or not one body moves in the initial plane depends on whether or not the other one does so.
D) one body may move in the initial plane independent of whether or not the other body does so.

Question

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The Answer of Before collision, the velocity vectors of two bodies (each moving initially) define an initial plane. After collision
A) the motion of both bodies must be confined to the initial plane.
B) the motion of both bodies must be in a plane differing from the initial plane.
C) whether or not one body moves in the initial plane depends on whether or not the other one does so.
D) one body may move in the initial plane independent of whether or not the other body does so.

Before Collision, the Velocity Vectors of Two Bodies (Each Moving