Chapter 2
Motion
Vectors and scalars, distance, displacement, speed, velocity and acceleration, the four equations of motion, free fall, and distance-time and velocity-time graphs — all worked through step by step.
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2.1 Vectors
2.2 Describing Motion
2.3 Equations of Motion
2.4 Motion Graphs
Try it yourself
🔬 Projectile Motion
Fire a projectile and explore how angle, speed, and air resistance change its trajectory, range, and time of flight.
Try this: Change the launch angle and initial speed, and toggle air resistance on/off.
Look for: Find the launch angle that gives the maximum range for a fixed speed — check it against the 45° rule.
Simulation by PhET Interactive Simulations, University of Colorado Boulder — licensed CC BY-NC. View on phet.colorado.edu ↗