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) \(5 v / 3\)

---

Definitions:

Documents

Text-based files that can contain information, such as letters, memos, or reports, typically created using word processing software.

Groupings

The organization of data or objects into categories or sets based on common characteristics or criteria.

Folder

A virtual container within a computer's file system used to organize files and other folders for easy access and management.

Save As

A command in software applications that allows users to save a current document or file with a new name or format, creating a separate version.