This post relates to the previous one *here*.

Speed is the time rate of distance traversed. Pace is the space rate of elapsed time.

The (time) *speed* of a body is the distance traversed per unit of independent time without regard to direction, *Δx*/*t*. The *instantaneous **speed* is the speed at a point in space and time: *dx*(*t*)/*dt*. It is the reciprocal of the instantaneous pace, 1/(*dt*/*dx*(*t*)).

The *inverse speed* (time pace) of a body is reciprocal of the speed, 1/(*Δx*/*t*) ≈ *Δt**/Δ**x*. The *instantaneous pace* is the pace at a point in space and time: 1/(*dx*(*t*)/*dt*) ≈ d*t*/d*x*(*t*). It is the reciprocal of the puncstanceous speed *dx*(*t*)/*dt*.

The (space) *pace* of a body is the traversal time per unit of independent distance without regard to direction, *Δt*(*x*)/*x*. The *puncstanceous pace* is the pace at a point in time and space: *dt*(*x*)/*dx*.

The *inverse pace* (space speed) of a body is the reciprocal of the pace, 1/(*Δt*(*x*)/*x*) ≈ *Δx**/Δt*(*x*). The *puncstanceous **speed* is the inverse pace at a point in time and space: 1/(*dt*/*dx*) ≈ d*x*/d*t*(*x*).

The (time) *velocity *of a body is the displacement traversed per unit of independent time, *Δ***x**/*t*. The *instantaneous **velocity* is the time velocity at a point in space and time: *d***x**(*t*)/*dt*. It is the reciprocal of the puncstanceous lenticity: 1/(*dt*/*d***x**(*t*)).

The *inverse velocity* (time lenticity) of a body is the reciprocal of the velocity, 1/(*Δ***x**/*t*) ≈ *Δt**/Δ***x**. The *instantaneous lenticity* is the lenticity at a point in space and time: 1/(*d***x**(*t*)/*dt*) ≈ *dt**/d***x**(*t*). It is the reciprocal of the instantaneous velocity: *d***x**(*t*)/*dt*.

The (space) *lenticity* of a body is the dischronment per unit of independent length, Δ**t**(*x*)/*x*. The *puncstanceous lenticity* is the time lenticity at a point in time and space: *d***t**(*x*)/*dx*.

The *inverse lenticity* (space velocity) of a body is the reciprocal of the lenticity, 1/(Δ**t**(*x*)/*x̂*) ≈ *Δx**/Δ***t***(x)*. The *puncstanceous **velocity* is the lenticity at a point in time and space: d*x*/d**t**(*x*).

Addition of speeds or velocities is with arithmetic addition (+) since the time interval in the denominator is the same for all.

Addition of inverse speeds or inverse velocities is with reciprocal addition (⊞) since the space interval in the numerator is the same for all.

Addition of paces or lenticities is with arithmetic addition (+) since the space interval in the denominator is the same for all.

Addition of inverse paces or inverse lenticities is with reciprocal addition (⊞) since the time interval in the numerator is the same for all.