OCR (non mei) M2 Wednesday 18th May 2016

For the last part to the last question, did P have no horizontal velocity and after the collision? Because the question said it just fell vertically or something, allowing us to use e to find the speed of Q (horizontally), right?

Yeah, that's what I thought as well. it said "Immediately after the collision P falls vertically." So yeah, I think it is a correct assumption.

There is a god, THERE IS A GOD, I REPEAT, THERE IS A ****ING GOD.
What did you get for the horizontal speed of Q at the start, 19 something? I forget

Xsanda’s solutions:

1) Car on a plane:
i) v = 22.5 m/s
ii) P = 35.9 kW

2) Particle up a plane:
i) Wd = 8.43 J
ii) v = 10.8 m/s

3 Arch shape:
i) show that: 13a/3π
ii) T = 8.82 N
iii) θ = 10.9º left of upwards vertical

4 Particle around a cone:
i) show that m/6 (2 sqrt3 g - 3 a ω²)
ii) T = 39.6N, V =1.19 m/s

5 Ladder:
i) show that 5W/24 (1+6x/a)
ii) max x = 1.7a
iii) tan = 39/14

6 collisions horizontally:
i) a: 5.5 m/s, b: 8 m/s, both in opposite direction to their original motion
ii) e=3/4

7 projectiles:
i) 18.8m high, 61.1 m AB
ii) 87.3 Ns
iii) 11.9 m

I agree with most of this accept Q5 iii) which I think should be tan(a)=12/5 and Q6 ii) is not exactly e=3/4 as this is calculated from the rounded values in the previous part, however I doubt anyone can remember the actual value. Good work overall though, props to you for remembering all of this.

Does anyone know what the mark breakdown was ?

I need the Hitler reacts video to heal my pain. Anyone know if it's up somewhere yet?

Would somebody mind explaining for me what the UMS requirements are for A* in Maths and A* in Further Maths? In maths, do I simply need to get an A overall, then 90 UMS average in C3 C4, and for further maths, do I simply need an A overall, and 90 UMS average over 3 of my A2 modules (I'm taking M2, S2, FP2, FP3). So, in the case that I did not get 90 UMS in M2 (but got an A), then it would be wise to make M2 my normal maths module, so I have C3 C4 M2, then, I simply need 90 UMS average over c3 c4. And then for further maths I will have FP2 FP3 S2, for which I need 90 UMS average across, correct?

Would somebody mind explaining for me what the UMS requirements are for A* in Maths and A* in Further Maths? In maths, do I simply need to get an A overall, then 90 UMS average in C3 C4, and for further maths, do I simply need an A overall, and 90 UMS average over 3 of my A2 modules (I'm taking M2, S2, FP2, FP3). So, in the case that I did not get 90 UMS in M2 (but got an A), then it would be wise to make M2 my normal maths module, so I have C3 C4 M2, then, I simply need 90 UMS average over c3 c4. And then for further maths I will have FP2 FP3 S2, for which I need 90 UMS average across, correct?

I don't have a channel, but if anyone wants to do us all a favour.

http://downfall.jfedor.org/

First exam and already rip FM A*, why OCR why?!, unless I'm godlike in FP2, 3 and S2.

Will give it a go later XD

This was mad hard! A violation of the geneva convention imo.
I've been get 68-72 in all past papers but this... I didnt finish last question.
I got e = 1/72 but i think thats wrong.
The semicircular C.O.M. Question anyone: Were they wired arcs or a full on lamina? I never got the final answer :/


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