Assuming that the Earth's orbital radius is 150 million kilometers, what is the tangential speed of our planet in meters per second?   b. Find the centripetal acceleration of a point in a bicycle wheel with a radius of 0.25 m and with a linear speed of 5 m/s.   c. What is the orientation of tangential velocity and the radial acceleration in a uniform circular motion? CHOICES: - Parallel - Perpendicular - 45 degrees

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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.