IB Physics Sub-topic D1 Definitions
This page contains our IB Physics definitions for sub-topic D1. By learning each one of these definitions, you will fully cover the content for IB Physics 'Further gravitational fields'.
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Escape speed
It is the speed required to travel from the surface of a mass to infinity to overcome the gravitational field strength
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Gravitational potential
It is the energy per unit test point mass
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Gravitational potential difference
It is the work done moving a test point mass per unit test point mass
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Gravitational potential energy
It is the work done in moving a mass from infinity to any point in space
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Gravitational potential gradient
It is the average gravitational field strength over a specified distance
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Orbital velocity
It is the velocity required to overcome the gravitational force and travel in an orbit around the mass
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Potential
It is the energy per unit test point due to the field
Potential difference
It is the energy difference or work done per unit charge moved between two points
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