A 12-Kg Object Moving with a Speed of 8

question 31

Multiple Choice

A 1.2-kg object moving with a speed of 8.0 m/s collides perpendicularly with a wall and emerges with a speed of 6.0 m/s in the opposite direction. If the object is in contact with the wall for 2.0 ms, what is the magnitude of the average force on the object by the wall?

• A) 9.8 kN
• B) 8.4 kN
• C) 7.7 kN
• D) 9.1 kN
• E) 1.2 kN

---

Definitions:

Leipzig

A city in Saxony, Germany, significant for its cultural heritage and historical importance in music, publishing, and as a center for trade fairs.

Laboratory

A facility that provides controlled conditions where scientific or technological research, experiments, and measurement may be performed.

William James

An American philosopher and psychologist, often referred to as the "Father of American psychology," known for his work in pragmatism and functional psychology.

Functionalist

Pertains to a perspective in sociology and psychology that emphasizes the importance of the roles that elements of society or cognition serve.