Tuesday, July 28, 2009

Help driving distances question (maths c)?

have this question 'some sections of the highway have a speed limit of 110km/h; predict the total stopping distance for this speed'. i am given a table of the stopping distances for speeds up to 100km/h (so 10, 20, 30 etc)





i know how to find it using the acceleration formula from physics but because its maths we cant use that formula. any help please!!!!!!!!!

Help driving distances question (maths c)?
90km/h = 90000m/3600sec or 900/36 m/s


Driver's reaction time 1/10 sec





Stopping Distance = Velocity times Time


...............................= 900/36 times 1/10


...............................= 9000/36


...............................= 250m

marigold

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