Help with Edexcel M1 (Review Exercise 1)

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.

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.

Here.

Remove your answer - we don't post full solutions

Remove your answer - we don't post full solutions

With respect, may I ask why?

Method mate and he knew the solutions anyway

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

Read the rules on the maths forum - you don't help people but posting a full method.

That's what my teachers say but I was unsure about it. Well you're right.

AND THANKS AGAIN FOR THE HELP

Hahaa it's like I'm talking to my teacher. Won't do it again, sir.

Well I am a maths teacher - but female