I have a mechanics exam coming up, and I'm going through a textbook answering questions. I'm really stuck on the following:(adsbygoogle = window.adsbygoogle || []).push({});

A lift ascends from rest with an accceleration of 0.5ms before slowing with an acceleration of -0.75ms for the next stop. If the total journey time is 10 secs, what is the distance between the two stops?

The thing is, I know that you have to use the SUVAT equations (displacement, initial velocity, final velocity, time) but I have no idea what to do with this. Why are they giving me two accelerations?

I've tried splitting the question into two parts, but i don't know the time travelled at each acceleration.

Please help! This is for my AS maths exam, on Jan the 12th, and with my luck, this kind of thing will come up, just because i'm not prepared for it!!. :)

Thank you!

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# Homework Help: AS maths exam mechanics

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