Explosions in One Dimension: a Shell Explodes into Two Fragments

question 24

Multiple Choice

Explosions in one dimension: A shell explodes into two fragments, one fragment 25 times heavier than the other. If any gas from the explosion has negligible mass, then

• A) the momentum change of the lighter fragment is 25 times as great as the momentum change of the heavier fragment.
• B) the momentum change of the heavier fragment is 25 times as great as the momentum change of the lighter fragment.
• C) the momentum change of the lighter fragment is exactly the same as the momentum change of the heavier fragment.
• D) the kinetic energy change of the heavier fragment is 25 times as great as the kinetic energy change of the lighter fragment.
• E) the kinetic energy change of the lighter fragment is 25 times as great as the kinetic energy change of the heavier fragment.

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