Is tilting your head back linear acceleraton? Super quick question

[sameeralord]

Hello, I need to know what linear acceleration and angular acceleration of head is.
This is not for physics, this is what I'm thinking, if I'm wrong please correct me and tell my why not

Shaking head-angular acceleration
Tilting head back- angular acceleration (Just in case this becomes linear, why? angle is changing right?)
Nodding your head-angular acceleration
Moving your head back and forth, in a straight line- linear acceleration

Thanks

 

[torquil]

I think you have everything correct.

Most are "angular acceleration" as you call it. Most head movements are rotational similar to how you can move a spinning top without moving its point of contact with the table. This is just an approximation of course.

As you mention, it is possible to move the head forward/backward in a linear movement. It is even possible to do a bit of linear movement sideways, but that seems more restricted.

I guess some necks are stiffer than others. And it doesn't get any better by sitting in front of a desk all day doing physics!