I'm suprised people found it harder!
I didn't think it was HARDER than other exams, just (a little bit) more theory based than othere exams.
Motion was ridiculously fucking easy - the first question ONLY used F=ma ! There wasn't any resisting forces at all? Free marks for the whole state, much?
For me, it seemed the only difficult part of motion was the springs stretching- three of them were straightforward but the Kinetic Energy one was a negative parabola. I misread the question and assumed the spring went straight back to it's regular position (thought the mass was removed) and so I thought it just increased as the spring contracted.
Also, for the LED Brightness question (the one on modulation), it was 2 marks. One was to get the shape/general points correct (inversed of course), the second part was to make sure that you did not actually touch the X axis because the brightness cannot reach zero no matter how low the voltage drop is because the circuit cannot break. I accidentally touched the X axis without thinking about it, so it remains to be seen whether I'll get two marks on that or not.
General electronics on the whole for me was pretty damn hard considering I didn't do it last year (I did motion unit 2, but didn't do unit 1 with electricity) so I thought it was stupid - because all of the V/I/R/P just seemed to be bizzare numbers. I'm sure I lost a few marks in this section.
S&M wasn't too bad, all you needed to do was convert the actual Y axis for the first few questions, as you were allowed to annotate the paper. The lines represented increments of 100x10^6PA (100MPa, 200MPa) etc - and then all the questions were pretty much straight 'read from the graph and multiply by a number' - quite easy if you could convert the axis.
The torque questions were also ridiculously easy.
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