Becky is sparring in a Tae Kwon Do class. Her opponent, Paul, executes a roundhouse kick. Paul can produce an average angular acceleration of 250 rad/s2. The angular displacement of his foot to Becky’s head is 5 radians. If Paul's kick starts from rest, how much time does Becky have to move out of the way if she wants to avoid being kicked in the head?
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.
Becky is sparring in a Tae Kwon Do class. Her opponent, Paul, executes a roundhouse kick. Paul can produce an
average
Paul's kick starts from rest, how much time does Becky have to move out of the way if she wants to avoid being
kicked in the head?
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