Mechanics Yr13 vectors

[sterile harness]

weird Q icl. Idk if this is the correct way to get it properly but, F=MA (2+alpha) i + (beta - 3) j = 5 x (6i + 4j)

2 + alpha = 30

beta - 3 = 20

(2+alpha)/(beta-3) = 3/2

4+2alpha = 3beta - 9

2 alpha - 3beta + 13 = 0

x2 gets you what it wants

but I think there's a nicer better way

[delicate orchid]

That’s pretty good tbh, but why was (6i+4j) the acceleration that’s where I was stuck?

[sterile harness]

idk, guessing because acceleration is a vector quantity and that's the direction it is going in. The question didn't give much more info to work with so F=MA was all I could think to do with what we had

[delicate orchid]

Fair enough, an pay idea on the second one? Obvs sub in the alpha to find beta but what from there?

[sterile harness]

if 6,4 is the acceleration, then you could suvat it or something

is there a ms because this question doesnt give you much help at all and its confusing me

[delicate orchid]

Unfortunately not, it’ll try get one this week, but Yh I agree it’s a confusing question