Physics
High School (11–12)
Mechanics › Vectors and Motion in a PlaneMechanics › Relative MotionMechanics › Circular MotionChapter 3Motion in a Plane
A cricket ball flies in a curve, a boat crosses a river and lands far down the bank, and a stone on a string goes round and round. None of these moves in a straight line, so we need a new tool: the vector. In this chapter we learn to add vectors and to split them into parts, we describe motion in a plane with them, and we study two important cases, the flight of a projectile and uniform circular motion. Python draws the paths and does the calculations.
Part of Physics · High School (11–12) (chapter 3)
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Vectors: Adding, Subtracting and Resolving
You walk 3 km east and then 4 km north. How far are you from the start? The answer is 5 km, and not 7 km. In this course we learn why. We separate scalars from vectors, we add and subtract vectors with arrows and with numbers, and we split any vector into two parts along the axes, which makes hard problems easy.
Motion in a Plane: Velocity, Acceleration and Relative Motion
A boat that points straight across a river does not land straight across. In this course we describe the position, velocity and acceleration of a body that moves in a plane, we find that the two directions of motion do not disturb each other, and we use the relative velocity to solve problems about boats in rivers, rain and an umbrella, and aeroplanes in the wind.