Motion in a Plane
Class 11 · Motion in a Plane

Vector Components

Resolve a vector into Vₓ = V cosθ and Vᵧ = V sinθ with live projection lines.

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Key Notes

01

Any 2D vector can be resolved into perpendicular components: Vₓ = V cosθ, Vᵧ = V sinθ.

02

Magnitude: |V| = √(Vₓ² + Vᵧ²). Direction: tanθ = Vᵧ/Vₓ.

03

Components allow us to treat x and y motions independently — core of 2D kinematics.

Formulas

Components

Resolution along x, y axes.

Magnitude from components

Pythagorean theorem.

Important Points

In projectile motion, x and y components evolve independently.

Vector Components notes from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 11 physics revision for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG.