Two identical masses (one initially at rest) collide elastically. After the collision, all of the following are true with respect to the lab except
A) the masses separate at an angle of 90 degrees.
B) the sum of the squares of the final speeds = the square of the initial speed.
C) the vector sum of the final velocities = the initial velocity.
D) the sum of the final speeds cannot exceed the sum of the initial speeds.

Question

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The Answer of Two identical masses (one initially at rest) collide elastically. After the collision, all of the following are true with respect to the lab except
A) the masses separate at an angle of 90 degrees.
B) the sum of the squares of the final speeds = the square of the initial speed.
C) the vector sum of the final velocities = the initial velocity.
D) the sum of the final speeds cannot exceed the sum of the initial speeds.

Two Identical Masses (One Initially at Rest) Collide Elastically