Is kinematics a special case of f=mA?
Hi, Physics presents kinematics as derivative relations of position, velocity, acceleration (subject to initial conditions) of some hypothetically physical (real) object through real space. Kinematics is about unmotivated movement. Forces are not mentioned in the "real" HS kinematics problems of children skating, cars on roads... et al, whatsoever.
Does kinematics have a physical principal (relating it to reality?). Is anything is conserved, kinematically? What is the origin of this big section of HS physics? Was there kinematics before f=mA? Is kinematics calculus, not physics?
I searched, read books... I think kinematics is about (...model of reality) a BODY, with the condition that acceleration of that body is constant. The idea, from Newton as: A = f/m with the force being constant in mag and direction and mass being constant as a scalar. Hmm, methinks there are no "kinematics on a circle" HS problems, if so, please tell me where?
Thanks, GymBeaux
