Learning Paths
Each learning path is one chapter: a guided route through a topic, one small course at a time. Pick a class to see its chapters in order.
Chapter 2
Motion in a Straight Line, Relative Motion, Gravitation
You are in a car, and another car passes you. How fast does it seem to move? Along a straight line, a few ideas are enough to answer this. In this chapter you learn relative velocity: how fast one thing moves as seen from another. Then you use it to find when two moving things meet. Python helps you check every answer.
4 courses
Chapter 7
Gravitation, Work, Energy and Power, Circular Motion
An apple falls, the Moon goes round the Earth, and the Earth goes round the Sun. Newton saw that one law of gravitation explains all three. In this chapter we start from the laws that Kepler found in the observations of the planets, we write the law of gravitation, we find how gravity changes above and below the surface, we find the energy that is needed to leave the Earth, and we study satellites, from the Moon to a weather satellite, and the weightlessness of an astronaut. Python solves the orbits and the energy.
3 courses
Chapter 1
Motion in a Straight Line, Gravitation, Circular Motion
A bus starts to move, a ball falls, the minute hand goes round a clock. Everything moves, and a few simple ideas are enough to describe all of it: how far, how fast, and how quickly the speed changes. In this chapter you learn these ideas and read them from graphs. You use them to work out where something will be, and when. You also write a little Python and watch the numbers turn into pictures.
3 courses
Chapter 3
Gravitation, Pressure and Fluids, Circular Motion, Motion in a Straight Line
You jump up, and you come down. A ball that you throw high comes back. The Moon goes round the Earth and does not fall on it. Is one force behind all of this? In this chapter we meet the law of gravitation. We find why mass and weight are not the same thing. Then we study why a heavy ship floats on water, and a small needle sinks. Python helps us with every calculation.
3 courses