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Kinematics · Physics

Two-Dimensional Motion

Break motion into x and y components, then solve each direction cleanly (and recombine like a pro).

This topic includes

Subtopics to master

Vectors first, then independence of motion — your launchpad for projectile motion.

Vectors
Vector Components
Resolve vectors into horizontal and vertical components to make problems solvable.
  • Components with trig (cos/sin)
  • Choosing axes
  • Recombining components
Start subtopic Foundation for all 2D problems.
Key insight
Independent Motion in x and y
Treat x and y separately: same time, different equations.
  • Shared time variable
  • Different accelerations per axis
  • When independence applies
Start subtopic This unlocks projectiles.
Practice
Practice & Exercises
Build confidence with components, axis choices, and x/y independence drills.
  • Component breakdown drills
  • Angle + magnitude to (vx, vy)
  • Axis-choice mini problems
  • Independent x/y mixed sets
  • Exam-style 2D motion questions
Open practice Make vectors automatic.