this post was submitted on 14 Jul 2023
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Physics is about nothing but real life
A statement so general that it is useless.high school physics does so many simplifications that itβs only about very specific experiments in real life, but is generally not very accurate.
Statistical approximations are a large part of complex systems, such as the summation of billions of forces of atoms.
Id argue given the insane ammount of moving parts, a simplication as easy to understand as Newtonian mechanics is extremely accurate, at least compared to the limited input data
As a high school physics teacher, if this is the hill you're willing to die on, then you neither understood the content in your high school physics class nor your university physics class. Newton's 2nd law is generally accurate in most scenarios even without simplifications.
Like me stopping to peddle my bike?
Yes, like you stopping to peddle your bike...
A simple force diagram and application of newton's 2nd law predicts the bike should accelerate to the left while it's velocity is towards the right. This means the bike should slow down.