Herman Trivilino's latest activity
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Herman Trivilino replied to the thread B The work done by two objects on each other.Well, I have been a full-time college-level physics instructor for 34 consecutive years and what you imagine is true for the vast... -
Herman Trivilino replied to the thread B The work done by two objects on each other.No. The first statement is a purely dynamical relation, that is, it's based on forces, momentum, and displacement. The second statement...
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Herman Trivilino replied to the thread At what age is special relativity taught?.Also with an emphasis on events. The notion that an event occurs at a particular time but lasts for no time at all. This is needed so...
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Herman Trivilino reacted to robphy's post in the thread At what age is special relativity taught? with
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I think kinematics in PHY 101 should be taught with more position vs time graphs, with a structural comparison to Euclidean geometry. I... -
Herman Trivilino replied to the thread At what age is special relativity taught?.Historically, attempts at teaching modern physics before newtonian physics have been failures. The students are left confused, and...
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Herman Trivilino replied to the thread Writing a vector parallel and normal to a unit vector ##\hat n##.Why, suddenly, are you concerned with the cross product? Prior to that you mention only the dot product. And it's true that the dot...
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Herman Trivilino replied to the thread Mixing water and ice.It means you assumed all the ice melted.
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Herman Trivilino replied to the thread I Does kinetic friction propel a person walking forward?.If that's the whole system then why are you involving the floor? The floor is external to your "whole system". I think you are confused...
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Herman Trivilino reacted to sophiecentaur's post in the thread I Does kinetic friction propel a person walking forward? with Like.
The distinction between static and kinetic friction 'categories' is really more harmful than useful; there is only one force in all...
