== UNIT 1: KINEMATICS ==
Scalars vs vectors: magnitude only vs magnitude+direction
1D motion: track position, velocity, acceleration separately
Slope of position-time = velocity
Slope of velocity-time = acceleration
Area under velocity-time = displacement
Average velocity = total displacement / total time
Constant acceleration: use kinematic equations
Instantaneous velocity = slope of position-time at point
Reference frames: relative velocity
Vectors in 2D: add/subtract components, resolve angles
Projectile: horizontal = constant velocity, vertical = constant acceleration
Range = v_x*t, max height = v_y^2/(2g)
Symmetry: time up = time down (launch/land same height)
Acceleration always points down = g
Equal time intervals: equal vertical displacement increments