A 10-Kg Object Is Dropped from Rest

question 9

Multiple Choice

A 10-kg object is dropped from rest.After falling a distance of 50 m,it has a speed of 26 m/s.What is the change in mechanical energy caused by the dissipative (air) resistive force on the object during this descent?

• A)-1.3 kJ
• B)-1.5 kJ
• C)-1.8 kJ
• D)-2.0 kJ
• E)-2.3 kJ

Recognize the role of governmental policies in shaping economic outcomes.

Analyze the impact of major events, such as wars and technological advancements, on the U.S. economy.

Describe the evolution of U.S. economic growth and development over time.

Explain the significance of infrastructure development, such as railroads, on national economics.

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