A 12-Kg Mass Is Projected from Ground Level with a Velocity

question 67

Multiple Choice

A 1.2-kg mass is projected from ground level with a velocity of 30 m/s at some unknown angle above the horizontal. A short time after being projected, the mass barely clears a 16-m tall fence. Disregard air resistance and assume the ground is level. What is the kinetic energy of the mass as it clears the fence?

• A) 0.35 kJ
• B) 0.73 kJ
• C) 0.40 kJ
• D) 0.68 kJ
• E) 0.19 kJ

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Definitions:

Parental Authority

The right and responsibility of parents to make decisions and guide the behavior of their children based on societal and legal norms.

Parental Responsibility

The legal and ethical duty of parents to ensure the health, safety, and well-being of their children, including providing for their material, emotional, and educational needs.

Autonomous Fathers

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The dedication or obligation one feels towards their family members, often manifesting as support, loyalty, and care.