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# CCEA M1 Mechanics 25th May 2016 watch

1. (Original post by ozmo19)
"The cyclist maintains a constant velocity as he travels from B to D.
Find the displacement of D from O. [4]
Find the cyclist's average speed for the whole journey. [3]"

True, but surely to work out the average speed for the whole journey you would have to work out the total distance first then divide by the total time?
2. (Original post by Blackstar152)
True, but surely to work out the average speed for the whole journey you would have to work out the total distance first then divide by the total time?
Thats what I was thinking!
3. (Original post by John5678)
Thats what I was thinking!
Yeah that's what it was!
4. (Original post by caitrionacarson)
Okay so not exactly an unofficial marks scheme but this is what I got from memory. Really not sure about q6 though.

Q1 (i) 70.2ms^-1
(ii) 6.65s
(iii) 5.8ms^-2
Q2 (i) 5ms^-1
(ii) -280m
(iii) 4.74ms^-1
Q3 angle=22.2
T=24.9N
Q4 (i) 2s, 10s
(ii) 62.4m
Q5 (i) v=k+2
(ii) I=-km
(iii) k=2
Q6 (i) 0.387
(ii) 7.62N
Q7 1.37m
I got the same for Q6 (and the rest)
5. (Original post by Blackstar152)
True, but surely to work out the average speed for the whole journey you would have to work out the total distance first then divide by the total time?
I didn't do that but still got 4.74m/s?
6. (Original post by ozmo19)
I didn't do that but still got 4.74m/s?
as long as you get the final asnwer it wont matter how you got there!
7. does anyone have the question paper they can post photos of??

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