For question 4, for the graph I did everything, except the two lines I drew did not intersect, only met at 40 seconds, how many marks would I expect to get?
You are Here:
Home
> Forums
>< Study Help
>< Maths, science and technology academic help
>< Maths
>< Maths Exams

Unofficial M1 Mark Scheme?
Announcements  Posted on  

Why bother with a post grad? Are they even worth it? Have your say!  26102016 

 Follow
 281
 08062016 20:59

 Follow
 282
 08062016 21:03
For question 4, you didn't need to put t=40 right because you wouldn't know that from the first part of the question?
Post rating:1 
 Follow
 283
 08062016 21:08
(Original post by CaiusMartius)
For question 4, you didn't need to put t=40 right because you wouldn't know that from the first part of the question?
(Original post by HoldtheDoor)
For question 4, for the graph I did everything, except the two lines I drew did not intersect, only met at 40 seconds, how many marks would I expect to get? 
 Follow
 284
 08062016 21:09
(Original post by AMarques)
Attached are my solutions to the paper in pdf format. If there any mistakes please do tell me! 
 Follow
 285
 08062016 21:11
If you got d=1.6m and m=66 because you used the wrong distance initiall but did then working correctly, how many marsk would you grt?

 Follow
 286
 08062016 21:12
(Original post by AMarques)
Attached are my solutions to the paper in pdf format. If there any mistakes please do tell me!
Also for Question 2(b) I used R  0.5g = 0.5a instead
How many marks do you think i'd lose in total? these are the only mistakes i did 
 Follow
 287
 08062016 21:13
(Original post by KloppOClock)
thanks, ive tried to attach it to the original post but it wont upload atm for some reason, ill try again in a few minutes!
Here is a more updated version 
 Follow
 288
 08062016 21:18
(Original post by patel123)
If you got d=1.6m and m=66 because you used the wrong distance initiall but did then working correctly, how many marsk would you grt?
(Original post by Kay Fearn)
For Question 7(a) I managed to work out the magnitude of F2 using sin and cos angles and it turns out the magnitude is right. Would i lose all 7 marks?
Also for Question 2(b) I used R  0.5g = 0.5a instead
How many marks do you think i'd lose in total? these are the only mistakes i did
You could potentially have lost 3/2 marks on that since you didn't consider the brick. 
 Follow
 289
 08062016 21:31
For Question 7a, if I used a diagram and the sine rule in order to work out the magnitude of F2, but then did not work it out in vector form, how many marks would I pick up there?

 Follow
 290
 08062016 21:41
Thank you! Let's hope I fall the right side of the boundary 😊
Post rating:1 
 Follow
 291
 08062016 21:51
(Original post by KloppOClock)
ALL ANSWERS HAVE BEEN EXPLAINED  CLICK ON THE MODEL ANSWERS TAB!
IMPORTANT NOTE: After speaking with some maths teachers, they have said that they believe the grade boundaries will be relatively low due to the simultaneous vector question and question three!
*So people stop asking, when using 'g' 2 or 3 significant figures is fine.
How many marks should I give myself?Spoiler:Question 1: (10 marks)ShowWhen using an approximation such as 'g', your answers should be to three or two significant figures or you lose one 'A1' mark.
Generally, every equation you form is worth a mark (that doesn't mean you can write random equations and get marks, they have to be part of the steps to get the answer)
If you got your final answer wrong, either post in the comments how many marks you think you should get, or look up previous questions that are similar by googling 'edexecel m1 questions by topic', choosing your topic and then press CTRL + F to find a question with similar marks. Look at how the marks have been distributed and compare it to the question.
Finally, mark it twice first harshly and secondly generously so you give yourself a range of possible marks, for example 5963 marks earned.Spoiler:Question 2: (6 marks)Show1(a) 104, (3 marks)
1(b) p = (400+15t)i + (20t)j (3 marks)
q = (20t)i + (8005t)j
1(c) Q = 640i + 640j (4 marks)
Model Answer BelowSpoiler:Question 3: (7 marks)Show2(a) T = 20.6N or 21N (3 marks)
2(b) 15N or 15.5N (3 marks)
Model Answer BelowSpoiler:Question 4: (12 marks)Show3 Ns (7 marks)
Model Answer BelowSpoiler:Question 5: (10 marks)Show4(a) (4 marks)
4(b) T = 8.75 s (8 marks)
Model Answer BelowSpoiler:Question 6: (7 marks)Showμ=0.73 or μ=0.727 (10 marks)
Model Answer BelowSpoiler:Question 7: (11 marks)Showd = 1.2m (4 marks)
m = 42kg (3 marks)
Model Answer BelowSpoiler:Question 8: (12 marks)Show7(a) F2 = 2.5i + 2.5j (7 marks)
(b) 13 ms1 (4 marks)
Model Answer BelowSpoiler:Model Answers: (click spoiler to show images)Show8(a) T = 11.8 N or 12 N(8 marks)
8(b) = 16.6 N or 17 N
It has a bearing of 225
or
45 degree angle between horizontal plane and vertical rope
or
draw a diagram and annotate angles (4 marks)
Model Answer BelowSpoiler:.Show
Question Bank: (simplified)Spoiler:If you want to try and calculate your UMS score, try this:ShowQuestion One:
Q has velocity (20i5j) and starting position (800j). P has velocity (15i+20j) and starting location (400i).
a) Find the bearing of Q.
b) i) Find the location of P and Q at time = t.
c) Find the location of Q when it is west of P.
Question Two:
A scale pan of 0.5kg carries a brick of 1.5kg and is attached to a vertical rope. The body is accelerating upwards at 0.5m/s/s.
a) Find the tension in the rope.
b) Calculate the force exerted by the scale pan onto the brick.
Question Three:
A particle of mass 0.4kg collides with a wall at a speed of 4m/s and rebound back 5m before stopping. The coefficient of friction on the ground is 1/8. Calculate the magnitude of the impulse exerted by the wall onto the particle.
Question Four:
A car M overtakes car N at 40m/s at point A and travels for T seconds before uniformly decelerating to 0m/s at point X. Car N travels at 30m/s for 25 seconds before decelerating uniformly at the same point. AX = 975m.
a) Draw a speedtime graph of both cars on the same graph.
b) Find the value of T.
Question Five:
Particle of mass 2kg on slope inclined to ground at 20 degrees. Being pushed up a rush surface by force of 4 N at angle of 30 degrees to slope. Calculate mew.
Question Six:
Nonuniform rod of length AB has length 6m and mass 30kg. It has two supports S and T, where AS = 0.5m and TB=2m. When a particle of mass M is placed at A, the rod is at the point of tipping around S. When a particle of mass M is placed at B, the rod is at the point of tipping around T. The distance between A and the center of mass is D.
a) Find D
b) Find M
Question Seven:
F1 = (i + 2j) F2 same direction as (i+j). Resultant of F1 and F2 has same direction as (i+3j). The resultant of F1 and F2 has acceleration (3i+9j) and initial velocity (3i22j).
a) Calculate F2
b) Find the velocity of the resultant of F1 and F2 and t=3.
Question Eight:
Mew = 1/5. Particle A is on a horizontal plane and has mass 1.5kg. Particle B is on a verticle rope and hangs with mass 3kg. Both are connected to a pulley so that the angle between them is 90 degrees. A is to the left of B.
a) Find Tension
b)Find magnitude of tension on pulleySpoiler:I hope you all did well!Show
you are amazing! hope you have done as well in all your other examsPost rating:1 
 Follow
 292
 08062016 21:55
I have gotten everything else correct but there is one thing bugging me, in question 1 I wanted to get it over and done with fast so I did what I never did before and I left p and q in the r1 = r0 +vt form, would I lose marks for not simplifying that or does it still count? After all it is the same thing...

 Follow
 293
 08062016 22:04
(Original post by Ronnie S)
I have gotten everything else correct but there is one thing bugging me, in question 1 I wanted to get it over and done with fast so I did what I never did before and I left p and q in the r1 = r0 +vt form, would I lose marks for not simplifying that or does it still count? After all it is the same thing... 
 Follow
 294
 08062016 22:07
(Original post by AMarques)
I would hazard a guess of you losing a maximum of 4 marks. If your method was right then you would get follow through throughout. Again, I'm not too sure.
If for F_2 you got the same coefficients for i and j then you would get the answer, they never specified a specific method, so that method could be also correct.
You could potentially have lost 3/2 marks on that since you didn't consider the brick. 
 Follow
 295
 08062016 22:26
Guys for the moments question I did everything right except for right at the end instead of doing (3/2) / (5/4) to get D as 1.2 I did it the opposite way round and got 0.83333 because I was really pressed for time and I lost focus
Im so mad because this means it screwed up my next question as well !!
Will I get ECF maybe? How many marks do you think I will l lose for that simple mistake? 
 Follow
 296
 08062016 22:27
(Original post by ifailedmygcse)
Guys for the moments question I did everything right except for right at the end instead of doing (3/2) / (5/4) to get D as 1.2 I did it the opposite way round and got 0.83333 because I was really pressed for time and I lost focus
Im so mad because this means it screwed up my next question as well !!
Will I get ECF maybe? How many marks do you think I will l lose for that simple mistake? 
 Follow
 297
 08062016 22:43
For question 2b, didn't it say the force exerted by the brick on the pan not the other way round?

 Follow
 298
 08062016 22:52
I drew the graph in Q4a as if the assumption was t was bigger than 25 and the car travelling at 40m s1 started deceleration later than the other car? I then got the correct answer for the second bit at 8.75s. Then, I drew a modified graph and stated it with the correct lines and correct deceleration times later on. Would I get the marks for question 4a?

 Follow
 299
 08062016 22:55
(Original post by lordrohan731)
I drew the graph in Q4a as if the assumption was t was bigger than 25 and the car travelling at 40m s1 started deceleration later than the other car? I then got the correct answer for the second bit at 8.75s. Then, I drew a modified graph and stated it with the correct lines and correct deceleration times later on. Would I get the marks for question 4a? 
 Follow
 300
 08062016 22:58
(Original post by KloppOClock)
yes, marks are generally for the correct shape of each line and the correct values
Write a reply…
Reply
Submit reply
Register
Thanks for posting! You just need to create an account in order to submit the post Already a member? Sign in
Oops, something wasn't right
please check the following:
Sign in
Not got an account? Sign up now
Updated: June 10, 2016
Share this discussion:
Tweet
TSR Support Team
We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.