# Trajectory

### Glossary Term

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The term 'trajectory' describes the way where an object moves in space. The trajectory of the shot of a shot put or the trajectory of a planet are the examples of trajectories.
###### Modelling in RFEM

In RFEM, you can define nodes of the 'Trajectory' type. This requires the existence of a line which is used as a reference object for the description of the trajectory. By specifying the parameter δ, you can define the position of the node along the trajectory. 0% refers to the starting point, 100% to the end point of the trajectory.

#### Bibliography

 [1] Manual RFEM. (2018). Tiefenbach: Dlubal Software.