Relative Motion

As everything in our universe is moving all at once, it would be illogical to assume such a concept as absolute motion. Everything in the world must be measured in relation to a reference point.

In relative motion, motion of an object is captured from a Inertial Reference Frame, which is a object we pretend is completely still

Concepts

• Fictitious Force
• Inertial Reference Frame
• Relative Velocity
  • Wind
  • Currents

Relative Velocity Subscripts

${}_o{\overrightarrow{v}}_g$ : velocity of object relative to ground ${}_m{\overrightarrow{v}}_g$ : velocity of the medium an object is in relative to ground ${}_o{\overrightarrow{v}}_m$ : velocity of the object relative to the medium

${}_o{\overrightarrow{v}}_g$ = ${}_o{\overrightarrow{v}}_m$ + ${}_m{\overrightarrow{v}}_g$. Explanation: Subscript Conventions