What does inertia have to do with response time, accuracy or precision and control over movement? Also, why doss inerita seem easy to overcome as very slow speeda while it is harder to overcome inertia at high speeds?
Do you mean biological movements or mechanical movement? As far as high-speed v slow speeds it is probably mostly because energy increases as the square of velocity. -Dale
it doesn't matter, its the same principle in both. inertia is an object's inherent tendancy to remain in the state it is in. that is, a moving object will keep moving at the velocity it started at unless an outside force acts upon it. or an object at rest will remain at rest unless a force acts on it. knowing this, one can infer and even observe that a faster moving object will be harder to stop than a slower moving object. this is because of inertia. it is harder to turn a car at a high velocity because the car's inertia will cause it to keep going straight. so very fine velocity adjustments (turning, speeding up or slowing down) require more force directly proportional to how much inertia the object has. inertia increases with a larger mass as well as with a greater velocity.
Not really, most mechanical motion is either uncontrolled or it is controlled through feedback loops. Biological motion, on the other hand, is typically controlled through feed-forward loops. (One of my favorite demonstrations of feed-forward is to get a block of styrofoam that looks like a cinder block or brick and to gently toss it to someone. Generally they will way over-compensate for the expected weight of the brick rather than the actual weight of the foam. Feedforward, not feedback.) Of course the physics is the same in either case, but the control is vastly different. Questions about response time, accuracy, and precision are much more control-oriented than physics oriented. -Dale
i guess if you look at it from that point of view than yes, they are different. i was just thinking in terms of physics. biological motion and mechanical motion are governed by the same laws of physical inertia. but what you are speaking of is a different type of inertia, i think, though it can be directly tied to physical inertia. the inertia of an idea, or the inertia of a prediction. personally, i think they can be explained by a similar, if not the same, principle--that is, if you use the right words.
