A 30-Kg Cart and a 2

question 56

Multiple Choice

A 3.0-kg cart and a 2.0-kg cart approach each other on a horizontal air track.They collide and stick together.After the collision their total kinetic energy is 40 J.The speed of their center of mass is:

• A)0 m/s
• B)2.8 m/s
• C)4.0 m/s
• D)5.2 m/s
• E)8.0 m/s

---

Definitions:

Quantity Effect

The change in quantity demanded or supplied of a product as a result of changes in its price.

Marginal Cost

The expense increase for generating an additional unit of a product or service.

Cartel

An association of independent businesses or countries that coordinate their actions to control the supply of a product or service, aiming to influence prices and maximize collective profit.

Marginal Cost

Marginal Cost is the cost incurred by producing one additional unit of a product.