School and Work: traveling

Open Question: Locker Overload and Traveling to Mudville math problems?

Open Question: Which of the following is the best coordinate system to analyze a car traveling northeast from one city to ano?

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inuyasha... Member since:May 08, 2006Total points:99 (Level 1)a. positive x-axis pointing east; positive y-axis pointing south
b.
positive x-axis pointing west; positive y-axis pointing east
c.
positive x-axis pointing north; positive y-axis pointing south
d.
positive x-axis pointing east; positive y-axis pointing northAnswer Question

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Open Question: A car initially traveling at 32.4 m/s undergoes a constant negative acceleration of magnitude 1.90 m/s2 after?

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Anthony Member since:September 24, 2009Total points:100 (Level 1)PLEASE HELP!!!!!!
A car initially traveling at 32.4 m/s undergoes a constant negative acceleration of magnitude 1.90 m/s2 after its brakes are applied.
(a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.330 m?.....in rev
(b) What is the angular speed of the wheels when the car has traveled half the total distance?
in rads/sAnswer Question

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