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- An automobile with 0.300 m radius tires travels 70,000 km before wearing them out. How many revolutions do the tires make, neglecting any backing up and any change in radius due to wear? x revolutions A truck with O.600 m radius tires travels at 29.0 m/s. At how many radians per second are the tires rotating? What is this in rpm? гad/s rpmA wheel with a 21 inch diameter is turning at a rate of 44 revolutions per minute. To the nearest inch, what is the speed of a point on the rim in in./min?Answer a and c