9709 MATHEMATICS P42 2014 GT

[thementor]

can someone please upload a solution for Q5.
for part (I) I got 10.5v^2
part (II) 135 x J or something
part (III) I calculated the tension and the work done by the tension and thn used the formula
work done by tension = ke gain - PE loss + work done against resistance, to calcuclate the work done against resistance

 

[thementor]

oh and for question 6. the deceleration was 67.5 and the value of R waa 15.5 N
the value of tension in the next part was 17.59 N

 

[thementor]

the answer to Q2??? T=5 right?????

 

[raysonzaffar]

can someone please upload a solution for Q5.
for part (I) I got 10.5v^2
part (II) 135 x J or something
part (III) I calculated the tension and the work done by the tension and thn used the formula
work done by tension = ke gain - PE loss + work done against resistance, to calcuclate the work done against resistance

The work done against friction was 25 but I don't remember how I got it. Then using the equation -
P.E loss = K.E gain + W.D against resistance.
135 - 25 = (22v^2)/2
110 = (22v^2)/2
220 = 22v^2

 

[thementor]

The work done against friction was 25 but I don't remember how I got it. Then using the equation -
P.E loss = K.E gain + W.D against resistance.
135 - 25 = (22v^2)/2
110 = (22v^2)/2
220 = 22v^2

what was the change in ke of the system. I got 10.5 v^2

 

[saadabid4]

Haha I'm sorry to break your hearts, but Lol it was such an easy paper.
The whole paper was seen.
I honestly believe the A will be at 40 -44. If the paper seriously was hard, (lmfaowhichitwasnt) , (which IS ALWAYS THE STUPID CASE IN PHYSICS CAUSE YOU NEED AN AVERAGE OF 35/60 FOR AN A IN P2) then POSSIBLY like 38 / 39, but I seriously believe it's 40 - 45.
Haha it was easy for me If I don't get full then atleast a 47 +.
IF ANYONE wants to discuss privately just ask haha.

EDIT : On the other hand, P1 was easy but not as easy haha,
I bet I have a high B or extremely low A in it, but inshallah since my M1 was so good it'll cover up and buff out to be an A.

Haha Bro
When the result comes i would love to see yours
Btw it was not difficult but not easy as well
I may get around 41-43 iA

 

[aq0zsw1xde2c]

EASIEST PAPER EVER!!!! And I wrote the paper more than 24 hrs ago so I guess I am not breakin any rules...

 

[thementor]

EASIEST PAPER EVER!!!! And I wrote the paper more than 24 hrs ago so I guess I am not breakin any rules...

did you get T=5 for question 2? Part I

 

[saadabid4]

What were the marks for q3 ?

 

[Snowysangel]

what was the change in ke of the system. I got 10.5 v^2

21/2 V^2

 

[aq0zsw1xde2c]

did you get T=5 for question 2? Part I

wat was da question for 2, part 1 again?

 

[thementor]

21/2 V^2

same thing right ??

wat was da question for 2, part 1 again?

the time at which the particles collide. particle P with acceleration 0.5 starting from A and particle Q with constant speed 0.75 passing through B

 

[Snowysangel]

can someone please upload a solution for Q5.
for part (I) I got 10.5v^2
part (II) 135 x J or something
part (III) I calculated the tension and the work done by the tension and thn used the formula
work done by tension = ke gain - PE loss + work done against resistance, to calcuclate the work done against resistance

The work dove against friction was 25x J

 

[Hadeelrm]

can someone post all the answers

 

[thementor]

The work dove against friction was 25x J

oh okay. And for Q6. The deceleration was 67.5 and R was 15.5N . The tension in the string was 17.59N

 

[Snowysangel]

What about the answers to the last question?

 

[aq0zsw1xde2c]

same thing right ??

the time at which the particles collide. particle P with acceleration 0.5 starting from A and particle Q with constant speed 0.75 passing through B

oh tht one, i think i got da same as yu...

 

[Shehroze Faisal]

Q3 anyone?? what were the tensions??

 

[A star]

oh okay. And for Q6. The deceleration was 67.5 and R was 15.5N . The tension in the string was 17.59N

forget it bro. aesae paper ko goli mar daenae chahyae -___-. keep calm and prepare for other papers

 

[raysonzaffar]

Q3 anyone?? what were the tensions??

11.9 N and 0.5N