Here are some answers I remember.
For the adding a vecotor and scalar quantity, I would write with adding velocity, you must consider the direction and find the resultant velocity, whereas with mass, you can just add their magnitudes.
I got 0.73 using suvat for the time taken down the ramp.
For the u^2 graph, the gradient i calculated was 16. Since 2a=m, m/2 = a, so acceleration was 8. It was then a simple F=ma question, giving you 7360N, or 7400N.
For the density, it was 7500, this was long, and hard, for sure.
What did y'all get for the wave equation one?
I forgot what I put for momentum, but I probs got it wrong.
Mean drift velocity was something *10^5 I think, quite high for some reason.
For the last, last question the answer was N=2.9*10^15 electrons emitted.
Q20 of multiple choice was 15, and the uncertainty one a few questions back was 6.5.
All I really remember, i found it quite hard, and timings wern't great, definetly harder than past papers, and I would expect low boundaries.