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Concerns the application of the laws of physics to analyze common situations encountered in everyday life.

-1 votes
3 answers
3k views

What is the physics of traffic speed limit? [closed]

In my highschool class the teacher said that the speed limit is designed to prevent drivers from crashing. Does anyone know how they are able to determine the speed limit?
Shamisen Expert's user avatar
14 votes
6 answers
65k views

Why do objects appear smaller when farther away?

Why does the apparent size of an object change when it is farther away from me compared to when it is closer to me? Can someone perhaps explain this through an optics perspective?
Shamisen Expert's user avatar