Relative Velocity (1D) (v_AB = v_A − v_B)

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v_AB = v_A − v_B

What each symbol means

SymbolWhat it stands for
v_AVelocity of A w.r.t. ground (m/s)
v_BVelocity of B w.r.t. ground (m/s)
v_ABVelocity of A relative to B (m/s)

When to use this

Galilean; same inertial line; velocities along one axis.