Curriculum
Course: IB Physics HL
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Curriculum

IB Physics HL

Theme A — Space, Time and Motion

0/125 Dr Dabour Hub Science Diagram and Course Material

Theme B — The Particulate Nature of Matter

0/105 Dr Dabour Hub Science Diagram and Course Material

Theme C — Wave Behaviour

0/73 Dr Dabour Hub Science Diagram and Course Material

Theme D — Fields

0/77 Dr Dabour Hub Science Diagram and Course Material

Theme E — Nuclear and Quantum Physics

0/89 Dr Dabour Hub Science Diagram and Course Material

Tools and Inquiry — IB Physics skills

0/43 Dr Dabour Hub Science Diagram and Course Material
Quiz

D.1.10 Escape Speed – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
The escape speed from a planet of mass M at distance r from its centre is
√(GM/r)
2GM/r
√(GM/2r)
√(2GM/r)
2.
The escape speed of an object depends on
the object's mass
the planet's mass and radius
the direction of launch
the object's size
3.
If a planet has twice Earth's mass and the same radius, its escape speed is
2 times Earth's
half Earth's
√2 times Earth's
4 times Earth's
4.
At the same radius, the escape speed compared with circular orbital speed is
√2 times greater
equal
2 times greater
half
5.
A body at the escape speed reaches infinity with
speed equal to the escape speed
zero speed
half speed
infinite speed
6.
Planet P has radius R and escape speed v. A planet of the same density with radius 2R has escape speed
v
4v
2v
√2 v
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Part of Theme D — Fields — see every lesson and quiz in this unit.
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