A disk, initially rotating at 138 rad/s, is slowed down with a constant angular acceleration of magnitude 3.10 rad/s². (a) How much tin does the disk take to stop? (b) Through what angle (rad) does the disk rotate during that time?

Q: Distance Speed Time 20 m/sec 3 secs

A:

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Q: 32 mi/h = m/s O a. 14.3 m/s O b. 71.59 m/s O C. 13.4 m/s O d. 41.3 m/s

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A: Displacement: It is the shortest distance between the initial and final position. Distance: The…

Q: - prove that B.

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A: Total distance traveled in total time:

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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.