An 7.3-cm-diameter, 390 g solid sphere is released from rest at the top of a 2.0-m-long, 20° incline. It rolls, without slipping, to the bottom. What is the sphere's angular velocity at the bottom of the incline? Express your answer in radians per second. ▸ View Available Hint(s) 195] ΑΣΦ 4.9 Submit Previous Answers Part B * Incorrect; Try Again; 4 attempts remaining C ? What fraction of its kinetic energy is rotational? rad/s

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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.