The driver of a car travelling in a straight line, level road suddenly brakes.
The car slides 10m in 2 seconds before stopping. Assuming constant deceleration, find the co-efficient of friction between the tyres and the road.
I got given this question as homework after doing a lecture on turning moments so that put me on the wrong foot straight away.
So ive assumed I need to find the velocity first using d/t the find the acceleration using s=u.t + 0.5.a.t2
but then im lost. Can anyone point where im going wrong?
You need to use
The normal reaction , and the frictional force
So you just need to calculate the acceleration of the car, and then you can find
so do I need the mass value to complete this?
would you also use this method for this question
or would this be better solved using the energy method?
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