# VZ

The VZ function computes the Z component of the relative translational velocity of marker I with respect to marker J resolved in the coordinate system of marker K. The time derivatives are taken in the marker L. Arguments J, K, and L are optional and default to 0, which refers to Global Frame.

VZ(I, J, K, L)

## Arguments

I
The marker whose velocity is to be computed.
J
The marker with respect to which the velocity is to be computed. The default is Global Frame.
K
The relative velocity vector is resolved in the coordinate system of this marker. The default is Global Frame.
L
Time derivatives are taken in the coordinate system of this marker. The default is Global Frame.

## Example

<Post_Request
comment = "vel-expr"
id      = "70000043"
type    = "EXPRESSION"
expr1   = "NULL"
expr2   = "VX(30301010,30301011,30301011)"
expr3   = "VY(30301010,30301011,30301011)"
expr4   = "VZ(30301010,30301011,30301011)"
expr5   = "NULL"
expr6   = "WX(30301010,30301011,30301011)"
expr7   = "WY(30301010,30301011,30301011)"
expr8   = "WZ(30301010,30301011,30301011)"
/>