APFIVE Conservation of Angular Momentum in a Collision
Two asteroids of equal mass approach each other in space. One has angular momentum about their common center of mass, while the other moves in a straight line directly toward the center of mass. After they collide and stick together, the system has non-zero angular momentum. Why?
A
Rotational kinetic energy converted to angular momentum
B
Total angular momentum is conserved if no external torque acts
C
The collision created angular momentum from nothing
D
Angular momentum is always conserved in collisions
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