A Block of Mass M = 9 $0.50 \mathrm {~m} / \mathrm { s }$

question 21

Multiple Choice

A block of mass m = 9.0 kg and speed V and is behind a block of mass M = 27 kg and speed of $0.50 \mathrm {~m} / \mathrm { s }$ as shown int the figure. The surface is frictionless, and the blocks suddenly collide and couple. After the collision, the blocks have a common speed of 0.90 m/s. How much kinetic energy of the blocks is lost due to the collision?

• A) 8.6 J
• B) 2.0 J
• C) 4.6 J
• D) 11 J
• E) 31 J

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Definitions:

Americas

The continents of North and South America, including the Central American and Caribbean regions, known for diverse cultures, histories, and ecological systems.

Affluent Society

A society that possesses a high level of wealth and consumption, often characterized by a high standard of living.

Marshall Sahlins

An American anthropologist known for his work on the structure of kinship and the evolution of societies and cultures.

Paleolithic

Referring to the earliest period of the Stone Age, characterized by the use of primitive stone tools and hunting and gathering as a way of life.