Not enough information. It isn't clear what situation you are thinking about.
Action and reaction forces act simultaneously. For every action force, there is an equal and opposite reaction force acting on a different object. This principle is known as Newton's third law of motion.
Reflection and refraction occur simultaneously when a light ray encounters a boundary between two different mediums at a specific angle known as the Brewster's angle. At this angle, the reflected and refracted rays are perpendicular to each other, allowing both phenomena to occur simultaneously.
No there is no difference between action and reaction forces!
Yes
you can get choked..............................lol
Yes.
...not always sequential and could occur simultaneously
If both the flexors and extensors contracted simultaneously there would be no movement in the muscle whatsoever.
When Polydactyly and syndactyly occur simultaneously with extra digits fused together
High tide nimo
High tide nimo
Yes, SN2 and E2 reactions can occur simultaneously in a reaction mixture, especially when both nucleophiles and strong bases are present. This can lead to a mixture of products with different substitution and elimination outcomes.