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Motion in the universe

Motion in the universe

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Question 2

An astronomical body, XXX, orbits a star in a highly elliptical orbit with an eccentricity of 0.96. Another body, YYY, orbits a planet in a nearly circular orbit. Which of the following correctly classifies bodies X X\,X and YYY, and describes the change in the linear orbital speed of X X\,X as its distance from the star increases?

A

XXX is a moon, YYY is a comet, and the orbital speed of XXX decreases.

B

XXX is a comet, YYY is a moon, and the orbital speed of XXX decreases.

C

XXX is a comet, YYY is a moon, and the orbital speed of XXX increases.

D

XXX is a planet, YYY is a moon, and the orbital speed of XXX remains constant.

Markscheme

Motion in the universe Questions

  1. IGCSE
  2. /Physics
  3. /Motion in the universe

23 exam-style questions on Edexcel IGCSE Physics Motion in the universe. Each one has a worked solution and a mark scheme showing where the marks go.

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