AP Physics 1easymcq1 pt
In a perfectly elastic head-on collision between two equal-mass objects, one initially at rest, the objects
A.exchange velocities
B.stick together
C.both stop
D.both move at half the original speed
Explanation
Core Concept
Equal masses in an elastic collision swap velocities, so the moving one stops and the resting one moves on.
Correct Answer
Aexchange velocities
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