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October 20, 2014

Homework Help: physic

Posted by Chan on Saturday, November 14, 2009 at 4:26am.

Hi!Need help please.
Question:A car initially traveling at 24.0 m/s undergoes a constant negative acceleration of magnitude 2.10 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?
____ rev

(b) What is the angular speed of the wheels when the car has traveled half the total distance?
___ rad/s

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