In the Independent Physics 2023 trial there was a question 22c about change in gravitational potential energy and the marking guidelies put the solution
0.5x600000x(9.8 - 8.22)x288=1.37x108J
but this was amended to
0.5x600000x(9.8 + 8.22)x288=1.56x109J
It wouldn't be a problem if all the markers used the amendment however I have heard stories of some who did not.
This led to many students who had 1.56x109J as the answer being marked incorrect whilst others who had the same answer being marked correct.
So if you did that trial I would check the marking for 22c again, especially if you had 1.56x109J as the answer.
0.5x600000x(9.8 - 8.22)x288=1.37x108J
but this was amended to
0.5x600000x(9.8 + 8.22)x288=1.56x109J
It wouldn't be a problem if all the markers used the amendment however I have heard stories of some who did not.
This led to many students who had 1.56x109J as the answer being marked incorrect whilst others who had the same answer being marked correct.
So if you did that trial I would check the marking for 22c again, especially if you had 1.56x109J as the answer.