June 28th, 2009, 03:14 AM
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 | Grand Panjandrum | | Join Date: Nov 2005 Location: South of England
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Quote:
Originally Posted by Anenga  The UK Highway Code gives a stopping distance (after the brakes have been applied) of 75
m at 70 mph (31.1 m/s).
i) Draw a free-body diagram of a decelerating car [2]
ii) For the above stopping distance, calculate the rate of deceleration [4]
iii) What friction factor (coefficient of kinetic friction) has been assumed in calculating
these stopping distances?
its question part (iii) that am stuck at. anyone know? | Frictional force is  , where  is the absolute value of the average decelleration.
CB |