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From Kepler to Newton

From Kepler to Newton

Kepler's laws figure showing an elliptical orbit with the Sun at one focus, equal areas swept in equal times, and the circular-orbit approximation Planetary motion was first summarized by Kepler from observations, then explained by Newton using gravity. An orbit is the path of one body around another, and the orbital period TTT is the time for one complete orbit.

Planetary motion Lesson

  1. A Level
  2. /Physics
  3. /Planetary motion

Step-by-step lessons on OCR A A Level Physics Planetary motion. Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks across the three papers require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.

Lessons