A Projectile in Flight Explodes into Several Fragments

question 62

Multiple Choice

A projectile in flight explodes into several fragments.The total momentum of the fragments immediately after this explosion:

• A)is the same as the momentum of the projectile immediately before the explosion
• B)has been changed into kinetic energy of the fragments
• C)is less than the momentum of the projectile immediately before the explosion
• D)is more than the momentum of the projectile immediately before the explosion
• E)has been changed into radiant energy

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Definitions:

Periaqueductal Gray Matter

A region of the midbrain involved in modulating pain perception and in coordinating fight or flight responses.

Semicircular Canals

Three looped tubes in the inner ear that are filled with fluid and help with maintaining balance by detecting head rotation.

Action Potentials

Brief electrical impulses that serve as the fundamental signals by which information is transmitted along nerve cells.

Endolymph

A fluid contained in the inner ear, playing a critical role in translating the movements of the head into neural signals for the brain to interpret balance and spatial orientation.