A 12-Kg Projectile Is Launched with an Initial Vertical Speed

question 23

Multiple Choice

A 12-kg projectile is launched with an initial vertical speed of 20 m/s. It rises to a maximum height of 18 m above the launch point. What is the change in mechanical energy caused by the dissipative (air) resistive force on the projectile during this ascent?

• A) −0.64 kJ
• B) −0.40 kJ
• C) −0.52 kJ
• D) −0.28 kJ
• E) −0.76 kJ

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Definitions:

Federal Legislation

Laws passed by the national legislature of the United States, the Congress, which apply throughout the country.

Necessary

An essential requirement or condition that must be met or possessed for a particular purpose or outcome.

Enumerated Powers

Specific powers granted to an entity, often a governmental body, explicitly listed in a constitution or similar governing document.

Proper Clause

Likely a mistake for "Necessary and Proper Clause," which grants Congress the power to pass all laws necessary and proper for executing its enumerated powers.