A ball of mass 3.1 kg is rolling along level ground. Initially its turning at 70.6 radians/second, but after rolling 20.3 meters it has slowed to 6.5 meters/second. If its angular acceleration is -2.75 rad/s2, what is its radius, in meters?
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.
A ball of mass 3.1 kg is rolling along level ground. Initially its turning at 70.6 radians/second, but after rolling 20.3 meters it has slowed to 6.5 meters/second. If its
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