[Potironette]

Oh! That makes a lot more sense now. So impulse is an interaction during which force acts during a period of time, and therefore having a car crash is having the car suddenly stop/slow while the body's still moving forward and say there are no air bags coming out, the impulse is the interaction between the body and the car--which doesn't take much time to finish so the force can be easily greater than the force holding the body's bones/skin together(?) and that makes the person get injured. On the other hand, if there are airbags, that interaction lasts longer, and so the force is less, and hopefully less than the force holding the person's body together and so they're less likely to get injured?

Period of time? Meaning work should be one interaction(?) but net force could be the result of many vectors(?)

Scalars are just quantities while a vector contains a quantity and a direction is what I know. Uhh, and vectors can be drawn together, and net force being zero could mean vectors of force going in pretty much any direction so long as they end up where they started when put together?