Search results

Yeah I did something similar , how rate of expansion is increasing and I also mentioned no fixed point of expansion.

Bro everyone's finding this exam too easy, going to scale down

Oh multiple choice, what did you do for 14? The gravitional one with moon/earth.

17?

Fr, about to cram so hard this weekend.

Hoping Chem is going to be treated like this physics exam was.

I had the same thought for acc, but the thing is was it said describing the entire thing and it's not just the earth that accelerates, moon does aswell. I think I threw marks on that Ke one, I just wrote velocities lmfao.

Was I the only one who found the Q14 multiple choice about gravitional attraction between moon and earth to have no correct answer? And for the projectile motion question part a where it said account for Ke, what did people do? Was vague and wasn't sure what it was asking.

did you figure this one out? i also got lost with this lol and ran outta time to look at it properly

ah so u did the same as me, glad im not alone with my idea lol

I'm going to be honest I don't remember all the algebra, my brains a little cooked. Time just cancelled out in the end, i really don't feel like grinding that algebra again sorry dude. Hopefully the official solution was same as mine and u can just look at that. Or try diddling with wolfram...

i created a third equation that represented the total distance/speed of the particle as one equation

They're vectors. Everything's a vector. Vector speed and position.

This is pre much the rough idea of what I did. Didn't actually do it rn because can't be bothered but maybe that gives you a better idea.

No?

Pretty much if you're looking for perpendicular values, you can treat it as Pythagorean, I derived the velocity vector in X and y and I created a third equation for both pos and velocity in the form of c² = ✓(a²+b²), I then multipled those two third equations (velocity and pos) and let them = 0...

Difficulty was less of an issue and more there was just seemingly some obscure and out of place questions within the paper.

The algebra genuinely was so messy, but it all tidied up really nicely if you stuck through. Pretty much everything cancelled beautifully.