Gravitational Potential Energy

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Presentation transcript:

Gravitational Potential Energy

Energy Conservation Free-falling object

Assuming it starts from rest at infinity, Energy Conservation Free-falling object Assuming it starts from rest at infinity, its speed when it hits Earth is… …which is?

Energy Conservation “Escape velocity”

What is the escape velocity from the surface of the Moon? Energy Conservation “Escape velocity” What is the escape velocity from the surface of the Moon?

Energy Conservation “Escape velocity” What is the escape velocity from the surface of the Enceladus, a moon of Saturn?

Homework questions?