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# Help with Edexcel M1 (Review Exercise 1) watch

1. (Original post by Muttley79)
Using the 240 is correct:

240 = 20/(3f) + time at constant vel + 20/f

then get an expression in terms of f.

Now find the area under the graph - two trapezia plus a rectangle (using the values in terms of f)

Now we add the three areas to get 4000 and you should be able to get f.
Ohhhhhhhh so you get 240 from the others oh I see
So you rearrange and/or collect and get 40t = 1600
so t = 40.

f = 20/3t therefore it is 20/120 which is 1/6ms^-2.

I see, I see I see.

THANK YOU VERY MUCH
2. (Original post by AlphaArgonian)
Hello, so my teacher assigned me to do the first 30 questions of the review exercise and funnily enough Q30 is the one question I just don't understand. I've looked at physicsandmathstutor.com and I still don't understand. The discs don't work on W10 and my friend who did them before the end of term on Friday asked the teacher but still doesn't fully understand the question.

Thanks.
Here.
Attached Images

3. (Original post by MathsAstronomy12)
Here.
4. (Original post by MathsAstronomy12)
Here.
Thanks
5. (Original post by Muttley79)
Method mate and he knew the solutions anyway
6. (Original post by Muttley79)
With respect, may I ask why?
7. (Original post by AlphaArgonian)
With respect, may I ask why?
It's one of the suggestions in the maths forum

It's much better for your learning to work it out from hints - which is what you did
8. (Original post by MathsAstronomy12)
Method mate and he knew the solutions anyway
Read the rules on the maths forum - you don't help people but posting a full method.
9. (Original post by Muttley79)
It's one of the suggestions in the maths forum

It's much better for your learning to work it out from hints - which is what you did
That's what my teachers say but I was unsure about it. Well you're right.

AND THANKS AGAIN FOR THE HELP
10. (Original post by Muttley79)
Read the rules on the maths forum - you don't help people but posting a full method.
Hahaa it's like I'm talking to my teacher. Won't do it again, sir.
11. (Original post by AlphaArgonian)
That's what my teachers say but I was unsure about it. Well you're right.

AND THANKS AGAIN FOR THE HELP
Well done for sorting it out in the end
12. (Original post by MathsAstronomy12)
Hahaa it's like I'm talking to my teacher. Won't do it again, sir.
Well I am a maths teacher - but female
13. (Original post by Muttley79)
Well I am a maths teacher - but female
Apologies, Ms Muttley

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Updated: October 25, 2015
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