I just finished off my U4 exam, it looked a bit harder than usual, however expect average boundaries. If anyone gets the paper, please do post it here. Please also discuss the paper here.
yo man there's another thread for this... but oh well... how did you find it? june 15 was a looot easier than this right? a lot of people around me were saying it was extremely easy though so i'm a bit scared
yo man there's another thread for this... but oh well... how did you find it? june 15 was a looot easier than this right? a lot of people around me were saying it was extremely easy though so i'm a bit scared
I thought it was a very easy paper compared objectively to previous papers, probably 71/72 for full UMS.
I thought it was a very easy paper compared objectively to previous papers, probably 71/72 for full UMS.
It was definitely easy. What did you write in the cyclist question though ?? I said that the banked track means that the cyclists don't need to steer as the force is already towards the centre. As for the helmet thing , The peak was lower because there is less change in momentum and so a lower area under the graph.
The only irritating question was the change of momentum of the alpha particle, how did you do that ??
It was definitely easy. What did you write in the cyclist question though ?? I said that the banked track means that the cyclists don't need to steer as the force is already towards the centre. As for the helmet thing , The peak was lower because there is less change in momentum and so a lower area under the graph.
The only irritating question was the change of momentum of the alpha particle, how did you do that ??
For the helmet question I drew a lower peak but the area (change in momentum) I said would be the same... foe the momentum question I only considered the horizontal components saying initial horizontal momentum is equal to final. I got some 3.70 value. Anyone got this???
for the helmet question i put smaller force and longer contact time bcz i remember from IGCSE those cushions are to increase contact time which reduce the force
It was definitely easy. What did you write in the cyclist question though ?? I said that the banked track means that the cyclists don't need to steer as the force is already towards the centre. As for the helmet thing , The peak was lower because there is less change in momentum and so a lower area under the graph.
The only irritating question was the change of momentum of the alpha particle, how did you do that ??
Momentum is conserved. Area under graph needs to be same, peak needs to be lower.
for the helmet question i put smaller force and longer contact time bcz i remember from IGCSE those cushions are to increase contact time which reduce the force
for the helmet question i put smaller force and longer contact time bcz i remember from IGCSE those cushions are to increase contact time which reduce the force
yup I did the same. haha everyone was saying they remembered it from IGCSE and I was like "what really"