A Proton of Mass M Is at Rest $\vec{U}^{j}$

question 75

Multiple Choice

A proton of mass m is at rest when it is suddenly struck head-on by an alpha particle (which consists of 2 protons and 2 neutrons) moving at speed $\vec{U}^{j}$ If the collision is perfectly elastic, wha speed will the alpha particle have after the collision? (Assume the neutron's mass is equal to th proton's mass.)

• A) zero
• B) 3v/5
• C) \(2 v / 3\)
• D) \(5 v / 3\)

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Definitions:

Deuterostomes

A classification of animals characterized by the development of the anus from the first opening in the embryo, with the mouth forming later.

Echinoderms

A phylum of marine animals known for their radial symmetry and include starfish, sea urchins, and sea cucumbers.

Water-Vascular System

A unique hydraulic system used by echinoderms (such as starfish and sea urchins) for locomotion, feeding, and gas exchange.

Echinoderms

A phylum of marine animals known for their radial symmetry and include species such as starfish, sea urchins, and sea cucumbers.