What is the difference between kinematics and dynamics? A quick Google search reveals "dynamic and kinematic viscosity," "kinematic and dynamic performance," "fully dynamic and kinematic voronoi diagrams," "kinematic and reduced-dynamic precise orbit determination," and many other occurrences of this distinction What is the real distinction between kinematics and dynamics?
kinematics - What does the magnitude of the acceleration mean . . . Your question is kind of vague but I will try to respond Acceleration is defined as the time rate of change of velocity Since velocity has both magnitude and direction, so does acceleration In other words, acceleration is a vector The length of the vector is its magnitude Its direction is the direction of the vector So the magnitude of acceleration is the magnitude of the acceleration
kinematics - Why do I get $\alpha = \omega ^2$ in angular acceleration . . . The tangential acceleration of a body in a uniform circular motion is 0 due to the fact that it's magnitude is equal to r (radius) times the angular acceleration (which is zero as the body has a constant speed and thus a constant angular velocity) The formula that you have stated for tangential acceleration is actually the one used to find the centripetal acceleration
kinematics - How to get distance when acceleration is not constant . . . (where x (t) is the position of the object at time t) That's fine for a canonball or something like that, but what about a car accelerating from 0 to cruising speed? The acceleration is obviously not constant, but what about the change in acceleration? Is it constant? I suspect not And then what about the change in the change of acceleration, etc etc ? In other words, how does one know how
Difference b w Kinetics Kinematics w concrete example Some websites out there say (ex ) explain that force is only considered in kinematics Does this mean for example Newton-Euler method is in kinetics and Lagrangian is in kinematics? I also prefer concrete examples in both category