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  • pjhirv
    pjhirv reacted to jbriggs444's post in the thread B Newton's first law? with Like Like.
    One way of understanding Newton's first law is as a statement that inertial frames exist. That there is such a thing as a frame of...
  • pjhirv
    pjhirv posted the thread B Newton's first law? in Mechanics.
    Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a...
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