Mechanics 42

[dayeed]

I made a distance time graph instead of displacement time and i also forgot to show decreasing gradient i made it constants i marked the axis correctly how many marks will i get out of 4,,, and i messed up (5ii) i got wrong acceleration 9.6 but i applied it to the rite formula for tension that is 30-T-1.6=3a , will i get method marks ???

 

[littlecloud11]

I made a distance time graph instead of displacement time and i also forgot to show decreasing gradient i made it constants i marked the axis correctly how many marks will i get out of 4,,, and i messed up (5ii) i got wrong acceleration 9.6 but i applied it to the rite formula for tension that is 30-T-1.6=3a , will i get method marks ???

you'll get 2/4 for the graph. i dnt remember the marks for 5 ii. but you'll get the method mark if it's ok, and also ecf for the tension

 

[littlecloud11]

hey!! i got acceleration 9.6 too!! thats wrong?

acceleration was 8.88 ms^-2

 

[Ahmed500]

Guys in the question number 6(ii) i got v=10 which needed a lot of work but in the law of conservation i did all rite but maybe wrote something wong in that will i lose the whole 9 marks but i am sure i got the v = 10 which was before the last line

 

[aaakhtar19]

Hey guys here u go its June 2012 P42 maths
and my answers do tell me if i am wrong in any question

 

[Abeer Hatecrew]

**** weather Today's weather was even worse!

 

[Ahsan Ausaf Ali]

What can I expect..pease give an honest and humble reply!!!!!!!!!

Math P1 : 70/75 ( assume GT is A=57, B=50)
Math M1: 42/50 ( assume GT is 36, B=32)

Will my AS percentage uniform marks cross 92/93 %??????????

 

[Taimoor93]

acceleration was 8.88 ms^-2

yeah it was 8.88 and tension was 1.76N...

 

[Ammar Naeem]

Q2- a=57.1, T=9N
Q3- t.0.896, d=2.13
Q4=22N
Q5 a=8.8 , t=1.76
Q6 a) 945kJ b) 985kJ
Q7) 1.4, -1

 

[Ahmed500]

Guys i 've lost about 6 marks in P1
P4 i did all right except in part 5(ii) i didn't substitute with 30 and 50N
6(ii) i 've got v= 10 but i 've messed with law of conservation or a calculation error
7 lost 2 marks for first part
2nd part made 2 marks for the displasment graph
Any chance to get an A in AS ?? Please Help i am so worried

 

[Taimoor93]

Q2- a=57.1, T=9N
Q3- t.0.896, d=2.13
Q4=22N
Q5 a=8.8 , t=1.76
Q6 a) 945kJ b) 985kJ
Q7) 1.4, -1

i got same answers

 

[ExoticPlayer09]

Hopeless

 

[Saad Sarfraz]

Guy wasn't the tension 5 in Q2 and angle 53.1??

 

[Ahmed500]

Guy wasn't the tension 5 in Q2 and angle 53.1??

Yeah it's 53.1 i am sure and the T was 9 N
the angle was sin inverse (12/15)

 

[Preetty lady]

aawww...but am doin paper 43

 

[Most_UniQue]

Hey guys here u go its June 2012 P42 maths
and my answers do tell me if i am wrong in any question

dude in the 6(ii) question where we find the force , i used sin a instead of replacing with 0.125 which gave me 984983 J which is pretty near to 985 J . Will I lose any mark? Cuz nothing is wrong with my method , I used angle instead of replacing it

 

[Hertz]

u have to write it in 3 sig. fig

 

[Most_UniQue]

u have to wright in 3 sig. fig

And how many marks will I lose?

 

[Hertz]

Hey guys here u go its June 2012 P42 maths
and my answers do tell me if i am wrong in any question

dude u have p1 maths ms also? if yes plz post it here

 

[Hertz]

And how many marks will I lose?

1 only coz u will get method marks for sure