Blocks a and B Are Moving Toward Each Other Along

question 79

Multiple Choice

Blocks A and B are moving toward each other along the x axis.A has a mass of 2.0 kg and a velocity of 50 m/s, while B has a mass of 4.0 kg and a velocity of -25 m/s.They suffer an elastic collision and move off along the x axis.The kinetic energy transferred from A to B during the collision is:

• A)0 J
• B)2500 J
• C)5000 J
• D)7500 J
• E)10000 J

Identify the conditions under which firms will earn zero, positive, or negative economic profits.

Recognize the significance of the market supply curve and its relation to individual firm supply in a competitive market.

Analyze the impact of market demand changes on firm behavior and market equilibrium in both the short and long run.

Apply the concept of opportunity costs and sunk costs to business decisions.

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