[Puzzle] Maths and Mechanics (16 hours left, hints for all questions)

Too advanced for me, I give up.

I don't like quizzes

This might be too advanced for me. lol I'll try to solve it later when I have more time.

Not worth it.

Gave it up :(

have the game already ;|)
also have problems with answer for Q3 (pretty sure it's correct, forman maybe? ^^)

Wrong question

Horray, I love Maths.

too hard for me.

I wouldn't do questions like this even for a free game!

Since a lot of people are struggling, I'll be posting the odd hint from time-to-time.
Q1 - No calculation is required here, just look at the diagram and read the question carefully. Perhaps read up on what ff(x) means. Or f(f(x)), perhaps.
But of course, I'm sure you had all already answered Q1. The rest will come soon.

I use math everyday at work, my kids ask me, "When would we ever need this stuff." and you put this up - 8 questions even!!!!!! I'm on MY time now - no thanks, the brain is off right now :)

Bumpity bump for solved :3

I can barely solve the "easy" puzzles posted here. I've got no chance with something like that.

The syntax for the first question is not even correct. ff(-3) doesn't mean anything in maths (unless there's a function named ff). It's either f∘f(-3) or f(f(-3)).

whats the format for the second question? I am pretty sure i got it right

Also awesome puzzle,once I did something similar :)

You would think a final year student in EEE would remember all this....you would be wrong :S

The only way I can start making some exercises xD
Thanks a lot

Hint for Q2:
Let x=e^(-0.25t)

Looks easy, but I don't remember anything of mechanics, and I don't understand some word, I hope the translator helps, thanks :)

Hint for Q3, and the last of the day:
Find dV by dt.

Hint for Q4:
Formula, where M is total mass.

Also, a general tip. I can almost guarantee that you won't be able to do some of these in your head. Grab a pen and paper. Do some diagrams for the Mechanics questions.

Q7: Is the answer exact or needs to be rounded? My answer rounded to integral kW was by 1 different from the "correct" answer. Isn't there an error in rounding?

Hint for Q5:
A diagram may help you here. Excuse my scribblings.

Never did maths in english, so its small hard to me :P