The tape in a videotape cassette has a total length 196 m and can play for 1.7 h. As the tape starts to play, the full reel has

Question

The tape in a videotape cassette has a total length 196 m and can play for 1.7 h. As the tape starts to play, the full reel has an outer radius of 43 mm and an inner radius of 12 mm. At some point during the play, both reels will have the same angular speed. What is this common angular speed? Answer in units of rad/s. 
The driver of a car traveling at 23.7 m/s ap- plies the brakes and undergoes a constant deceleration of 2.18 m/s². How many revolutions does each tire make before the car comes to a stop, assuming that the car does not skid and that the tires have radii of 0.34 m?

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