OCR MEI M1 & M2 June 16th 2011

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Reply 20

fwed1

M1: Went really well for me :biggrin:

Hope I got an A. All my friends found it easy aswell so grade boundaries might be quite high.

Reply 21

anooshayarif

Yes the paper was very easy!!! :smile:

But I couldn't really do q5 - the noise one, but got 3.51s as the answer. What did u get?

Reply 22

fwed1

something similar to that not sure exactly

Reply 23

EmperorMustard

M2 was a beaut of a paper, easier than all the past papers I thought. Hopefully ive done well although everybody thought it was a good paper :smile:

The 8 marker of Q1 was a tricky one I thought, finding the angle after two bounces, and I think I got that wrong (I got something like 7), and I am fairly certain I messed up the last question by using the wrong force (I got mu as something like 0.6), but other than that I am fairly confident about my answers :smile:

Don't think it'll be an A because I suspect the boundary will be high, would hope for a B though which will do me fine (I need an A overall but expected this would be my worst exam)

Reply 24

anooshayarif

Did u use the sound speed which was 343? I didn't because I wasn't sure what to do with it. Just made the vertical distance equation and equated that to 0. :smile:

))

Reply 25

fwed1

Original post by anooshayarif

Did u use the sound speed which was 343? I didn't because I wasn't sure what to do with it. Just made the vertical distance equation and equated that to 0. :smile:

))

I found the distance the object travelled. Found out how long it took sound to travel that distance and then added that to the time it took the object to travel that distance.

Reply 26

rebecca_:)

i got 3.51 seconds for how long it was in the air for, then i worked out the distance as 86 m
so to work out the time you would hear the bang, i done 86/343 = 0.25seconds, sounds about right to anyone? :smile:

Reply 27

Perky perks

Original post by anooshayarif

Yes the paper was very easy!!! :smile:

But I couldn't really do q5 - the noise one, but got 3.51s as the answer. What did u get?

i got something like 3.76 for that

Original post by rebecca_:)

like this ^^

Reply 28

fwed1

Original post by rebecca_:)

Yes! This!

Reply 29

kalok

Original post by rebecca_:)

same !! high five ! :smile:

Yaaay!

can someone tell me how to work out the question 6 in section B ii (B) The big graph one

The question said something differ in least v 0~t ~6 s cant remember ........

Reply 32

rebecca_:)

Original post by kalok

can someone tell me how to work out the question 6 in section B ii (B) The big graph one

The question said something differ in least v 0~t ~6 s cant remember ........

that one was so confusing, i put v=-4 and came out with t = 3 & 4 :smile:

so then i said on the graph it says 2.4 - 4.5 and said the difference was 1.1 seconds

not right like, but still only logical thing i could think of :/ :colondollar:

Reply 33

NoFunnyBusiness

I got 1.09 as the difference between the smallest velocity

anyone do m2 then?

Original post by rebecca_:)

that one was so confusing, i put v=-4 and came out with t = 3 & 4 :smile:

so then i said on the graph it says 2.4 - 4.5 and said the difference was 1.1 seconds

not right like, but still only logical thing i could think of :/ :colondollar:

lol same here :P

Reply 36

chunkycalculator

what di people get for V the velocity before in question 4a

Reply 37

-jessica

M2: Realised how to do the last part of q1 on the walk home ¬¬
What did people put for the state the angle part?

Reply 38

Stamford 10

If I used all the correct method and followed it through to the end for the question involving speed of sound but misread my calculator and inserted a false value for (u) at the start. Will I just lose my answer mark but get the other 7 marks for the steps before?