A satellite travels clockwise in a circular orbit on a page. At one instant it is directly above the centre of the Earth on the page.
Which gives the direction of its motion and the direction of the gravitational force at this instant?
Motion to the right; force up the page.
Motion down the page; force to the right.
Motion to the right; force down the page.
Motion up the page; force to the right.
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.