1. The tires of a car make 84 revolutions as the car reduces its speed uniformly from 91.0 km/h to 62.0 km/h . The tires have a diameter of 0.90 m . A. What was the angular acceleration of the tires? Express your answer using two significant figures. B. If the car continues to decelerate at this rate, how much more time is required for it to stop? Express your answer to two significant figures and include the appropriate units. C. If the car continues to decelerate at this rate, how far does it go? Find the total distance. Express your answer to three significant figures and include the appropriate units 2. A cooling fan is turned off when it is running at 840 rev/min . It turns 1200 revolutions before it comes to a stop. A. What was the fan's angular acceleration, assumed constant? Express your answer using three significant figures. I got -0.513rad/s^2 B. How long did it take the fan to come to a complete stop? Express your answer to three significant figures and include the appropriate units