M1 HELP NEEDED, RIGHT NOW!!

[nid404]

also the ms if possible...i'd like to cross check...cuz i do cie

[halosh92]

By the way i want to ask u..which one is tougher cie or edexcel?

[nid404]

By the way i want to ask u..which one is tougher cie or edexcel?

I've just solved old M1 edexcel papers...considerably easier I'd say

[nid404]

srry for the delay...
glad i ws right  

ok...so basically momentum is a vector quantity so u have to take into the direction of motion

so in collision where momentum is conserved

m1u1+m2u2=m1v1+m2v2

km2u - 4mu = -kmu + mv
v=u(3k - 4)
v>0   that's because k >2  if k>2 then v>+2u implies v>0
change in sign....earlier mometum=? 4mu  now=+u(3k ? 4)  implying change in direction

ok if k=7/3
impulse is the change in momentum
m[u(3k - 4)] - (- 4mu)
3muk-4mu+4mu
3mu X7/3 = 7mu

[halosh92]

srry for the delay...
glad i ws right 

ok...so basically momentum is a vector quantity so u have to take into the direction of motion

so in collision where momentum is conserved

m1u1+m2u2=m1v1+m2v2

km2u ? 4mu = ?kmu + mv
v=u(3k ? 4)
v>0   that's because k >2
change in sign....earlier mometum=? 4mu  now=+u(3k ? 4)  implying change in direction

ok if k=7/3
impulse is the change in momentum
m[u(3k ? 4)] - (? 4mu)
3muk-4mu+4mu
3mu X7/3 = 7mu

no problem could you just tell me whats the "?" in ure explanation.....and plz explain this part for me "v>0   that's because k >2"
thx

[nid404]

edited my post

[halosh92]

edited my post

thx a bunch dude 

[nid404]

thx a bunch dude 

dudet 

[sameee]

Hello everyone, i need help with those couple of questions: In the cie M1 book pg: 142, Q7 and 8,
                                                                                               and the question on page 143.

Thanks in advance

[astarmathsandphysics]

Dont have the book post the Questions

[halosh92]

M1 edexcel AS maths
2004 june
q6 d
q6 e

could someone explain this step by step i dont get anything form the ms.
THXXX

[astarmathsandphysics]

That question doesnt have a d or e

[Saladin]

(a)





(b) We have assumed that is towards the right. And therefore, as we know that , let us use this to determine whether the direction changes or remains the same.

If

Then , as we can see from calculation, in (a).

(c) using B

Therefore,



Thus

[Saladin]

oops, i guess i was a bit late huh??

[halosh92]

That question doesnt have a d or e

sorry :S
its quetsion 7