Tangent and normal acceleration, curvature radius

[ron_jay]

What exactly are the tangent and the normal accelerations of a projectile motion and how are they expressed mathematically?

What is curvature radius? What is its expression? How is it derived ?

 

[Cyrus]

I'd look at a calclus book. You're asking too much here.

 

[Doc Al]

At any given instant the projectile's acceleration can be expressed in terms of its components parallel (tangential) and perpendicular (normal) to its velocity.