A comet moves from the most distant point of its elliptical orbit towards the Sun.
Which describes the changes as it approaches the Sun?
Its speed increases and the gravitational pull increases.
Its speed increases and the gravitational pull decreases.
Its speed decreases and the gravitational pull increases.
Its speed decreases and the gravitational pull decreases.
80 exam-style questions on Edexcel GCSE Physics 7.1 The Solar System and gravity, covering 7.1.1 Weight and g on different bodies in space, 7.1.2 The Solar System, 7.1.3 Changing ideas about the Solar System, 7.1.4 Orbits of moons, planets, comets and satellites, and 7.1.5 Gravity and orbital motion. Each one has a worked solution and a mark scheme showing where the marks go.