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# Edexcel M2/M3 June 6th/10th 2013 watch

1. (Original post by Anonymous1717)
Anyone?
Assuming this is all acting in one line Speed = |Velocity|. i.e. just take out the negative sign if it's there.
2. (Original post by Anonymous1717)
Anyone?
Velocity is speed with direction. If it says find the velocity, you can leave the answer in vector form. If it asks for the speed, you always need to find the magnitude of the vector, which is where you use Pythagoras.
3. I'm ready to ace this exam tomorrow, bring it on!!!
4. (Original post by Anonymous1717)
Anyone?
If velocity is negative, write the modulus of it to get the speed. If the velocity is positive you can just write that as the speed.
Speed is always positive, it is a scalar.
Velocity is a vector quantity, it has direction, so can be negative.
5. Anyone think that collisions requiring use of sum to infinity formula will come up?
6. (Original post by Serpentine111)
Anyone think that collisions requiring use of sum to infinity formula will come up?
Highly doubt it, only seen one question on it in the old M2 textbook.
Unless they wanna be really mean...
7. (Original post by Serpentine111)
Anyone think that collisions requiring use of sum to infinity formula will come up?
what is that ?!
8. (Original post by benyp7)
If velocity is negative, write the modulus of it to get the speed. If the velocity is positive you can just write that as the speed.
Speed is always positive, it is a scalar.
Velocity is a vector quantity, it has direction, so can be negative.
Now maybe I'm just being really stupid, but would you know it's negative if the - was in front?
And if you take the modulus of something, do you basically just put a bracket round it with a -?
Thanks so much
9. (Original post by Anonymous1717)
Now maybe I'm just being really stupid, but would you know it's negative if the - was in front?

Thanks so much
Well its negative if its going in the opposite direction the the positive direction. If it has a minus sign in front of it, of course it's negative.
10. (Original post by Student8)
what is that ?!
There is a question in one of the M2 textbooks where you had to to calculate things to do with a ball being dropped from a height and it would rebound up and down and up etc.

Which in theory would be infinite so you needed to combine the sum to infinity equation from C2 with the M2 stuff.

I don't think it will come up though; it was probably just a stretch and challenge thing in the text book.
11. I'm really worried about this exam, I just hope they dont throw in any random questions that will put me off! My university place depends on this
12. (Original post by MasterYi)
There is a question in one of the M2 textbooks where you had to to calculate things to do with a ball being dropped from a height and it would rebound up and down and up etc.

Which in theory would be infinite so you needed to combine the sum to infinity equation from C2 with the M2 stuff.

I don't think it will come up though; it was probably just a stretch and challenge thing in the text book.
Would you be able to tell me which question in specific so I just might try or even see the solutions! Dont want to take a chance knowing edexcel!!
13. (Original post by benyp7)
Well its negative if its going in the opposite direction the the positive direction. If it has a minus sign in front of it, of course it's negative.
Yeah, thanks for spelling it out for me!
14. (Original post by MLogan)
I'm really worried about this exam, I just hope they dont throw in any random questions that will put me off! My university place depends on this
I need a high A-A* realistically to get into Bath! Generally it will be okay i think! It's the time handling and silly mistakes like forgetting g etc.. They bring me down so much!
15. (Original post by MathsNerd1)
I'm ready to ace this exam tomorrow, bring it on!!!
So 100%? I'm doing this exam as well
16. (Original post by ACBLISS)
So 100%? I'm doing this exam as well
I'm hoping so, at least 95+%
17. (Original post by MLogan)
Would you be able to tell me which question in specific so I just might try or even see the solutions! Dont want to take a chance knowing edexcel!!
I believe it's in the Mixed exercise of chapter 4.
18. (Original post by benyp7)
Highly doubt it, only seen one question on it in the old M2 textbook.
Unless they wanna be really mean...
They might do Hopefully not since this will be my 4th time sitting M2 lol
19. (Original post by MLogan)
Would you be able to tell me which question in specific so I just might try or even see the solutions! Dont want to take a chance knowing edexcel!!
I'll scan the pages. Will take a few minutes.
20. June 2012 question 7, about the lamina - how do you deal with the modulus?

Thanks!

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