A bicycle tire is spinning clockwise at 3.10 rad/s. During a time period At = 1.70 s, the tire is stopped and spun in the opposite (counterclockwise) direction, also at 3.10 rad/s. Calculate the change in the tire's angular velocity Aw and the tire's average angular acceleration av: (Indicate the direction with the signs of your answers.) HINT (a) the change in the tire's angular velocity Aw (in rad/s) rad/s (b) the tire's average angular acceleration a. (in rad/s2) 'av rad/s? Need Help? Read It Watch It

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Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.