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.
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divers go off the diving board and balls their body up as they do a flip. The divers spin faster than if they try to flip their body without balling up. . Divers spin faster when balling their body up because of
A. conservation of
angular momentum ( radius (r) increases, speed (v) increases )B. Cosevation of linear momentum because mass decreases by balling up the body.
C. less effect of air drag on the balling up body
D. Conservation of angular momentum ( radius (r) decreses , speed( v) increases)
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