Velociraptor = positionraptor/time. As written the raptor cancels and you get a scalar not a vector, simply speed.

Edit, there is no operator before the raptor so probably best not to cancel.

Scalar: speedraptor = distanceraptor/ timeraptor

Vector: velociraptor = positionraptor/ timeraptor

Without a direction it is a scalar not a vector, so it is speedraptor.

Classic loose connection failure.

Onshape is free. Once you learn parametric modeling everyone else’s stuff is crap.

Based on this photo, it looks like it is failing in shear. It’s not a wood problem, it’s a design problem. The upper joint on the far right in the photo has clearly rotated and not a single brace for shear is visible. Think triangles and fix the design. It looks like this could be saved