Official OCR A2 G484 June 2016 [Module 1] [90UMS]

Damn, I botched up my graph then. Hopefully there will be full ecf for following calculations..

Hey same here! Plus I messed up the mass of S2... and the hose question...

nope. it is released from rest, therefore KE is zero at start, the max KE reached is 50 since PE released is 50 :L

Yeah I messed up on the hose because I went into autopilot and thought what we calculated in I) was momentum smh. So I worked out everything correctly method wise, but used wrong value for momentum. For the s2 mass, I got 1.73*10^33, anyone else?

E=mgh times 50 =mc change temp

Therefore m cancelled out double m doesn't affect temp

Thats what i thought, but surely, when the mass is doubled, the energy is doubled (mgh) so wouldnt the temperature increase aswell? I understand the equation obviously shows that temperature changeshouldnt increase, but i cannot understand how this is the case in a physical way.

Areas were different because distances of bounces were different
In common - same type, same time, same magnitude
Different - different bodies, opposite direction
I think if the moon was closer it's period would get smaller
My assumption were KE = GPE perfectly, and that all beads fell from the same height
Internal energy is directly proportional to temp E = (3/2)kT

Anyone else absolutely hate that exam? Had a mini panic attack during it. Just gonna find a way to sell my soul for an A haha

Q1:velocity is 5.38. D is 3.45. Height is 0.6m

1070? I did mass x velocity to get the force, then did that times sin 55 and added it to his weight, though you might have to had taken it away.

I did too... I feel like the format was completely different? All the questions were very non-standard . I think last years paper was much nicer than this (Kepler's 3rd law derivation came up!) maybe other than the very last question about the balloon. The moment the invigilator said 10 minutes left I started shaking like mad. So you're not alone. Good luck. Lets hope for low grade boundaries.

Same fmll. Was going for 100% umsd
too. Think I may miss out now

Thats what i thought, but surely, when the mass is doubled, the energy is doubled (mgh) so wouldnt the temperature increase aswell? I understand the equation obviously shows that temperature changeshouldnt increase, but i cannot understand how this is the case in a physical way.