Qualification > Math

Mechanics Paper 42 Solutions

<< < (2/6) > >>

XaM!!:

--- Quote from: neno on May 20, 2010, 11:07:37 am ---how many marks was 5 ii) worth....how r u sure these r the ryt answers....i got all the same answers other than this part sumhow i got 0.13 as the height
dont u do 1.35-workdone against resistance=ke-pe
then PE =0.39 i think i dont remember
 

--- End quote ---

ya

P.E = K.E + (W.D)resistance...


evn i forgot my ans... but m sure they r rite... I MESSED THAT VELOCITY=3.95 PART!!! It was of 7 marks... m feeling HORRIBLE!!!

cockyxrocker:
for question 7(ii) didnt they ask you for the total distance travelled and not the displacement?...
i got k as zero and my expression was 225 + 3375/t
and i got 2.4 for 7(iii)

[Spy]:
yeah im sorry it was 36.9 :)

and yeah im sure of the rest :)

i hope i dont loose much due to silly mistakes :S

[Spy]:

--- Quote from: neno on May 20, 2010, 11:07:37 am ---how many marks was 5 ii) worth....how r u sure these r the ryt answers....i got all the same answers other than this part sumhow i got 0.13 as the height
dont u do 1.35-workdone against resistance=ke-pe
then PE =0.39 i think i dont remember
 

--- End quote ---


someone remind me of the particle's mass :S

cashem'up:
yea i got the same answers whereas in
6 ii i got i think 3.29 because now the particle will be decelartng against friction
and for 7 ii i got k as 450
and the next part v as 5.4....yep just reassure 6 ii otherwise i m sure this is rite.....

Navigation

[0] Message Index

[#] Next page

[*] Previous page