I thought you couldn't get them until Monday! Otherwise I would have started getting them sorted
I've always called it completing the cos (or sin) but yours makes much more sense!
That was exactly my thinking! Which is why I asked these questions.
Oh me too, when I'm marking homework, assessments etc. But it was the one mark that would have got this student an A that would have got him a £30000 bursary 😢
Well I suppose I don't know! But when we did old spec we did MEI and it felt like the mark schemes were more reasonable. But then again I never reviewed any scripts back then.
I've had students who've said Physics taught them to do it in one equation. I told them not to!
I was thinking down-left-up
Ok a more controversial question: if we're saying all the as are the same, can we not consider the system as a whole and write f=ma based on the direction of motion being up-right-down? Rather than using simultaneous equations?
So the diagram needs three acceleration arrows for it to be correct? I'm not sure I do this 😬