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MMike_bb reacted to Ibix's post in the thread Undergrad Why is gravity a fictitious force? with
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We don't. Newtonian gravity respects the equivalence principle, and that models gravity as a real force. However, if gravity (in... -
MMike_bb posted the thread Undergrad Why is gravity a fictitious force? in Special and General Relativity.I read about equivalence principle. I tried to understand Einstein's thought experiment with elevator and I can't understand why we...
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MMike_bb reacted to Ibix's post in the thread Undergrad Different result with kinetic energy and momentum when a bullet hits a target with Like.
Is the collision elastic or inelastic?