Free Fall Model: Energy and Momentum
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Sections 4.4 & 4.5
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4 Terms
1
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Why introduce gravitational potential energy?
In the free-fall model, the only force acting on a system is gravity near Earths surface
2
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Which of the following describes the gravitational potential energy near Earths surface (assuming +y is upward)?
The gravitational potential energy is higher at greater heights
3
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If the height of an object increases Δ𝑦 > 0, how does the gravitational potential energy near Earth’s surface change?
ΔEg > 0
4
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If the height of an object decreases Δ𝑦 < 0, how does the gravitational potential energy near Earth’s surface change?
ΔEg < 0