The simulation of a rotating wheel below shows the relationship between angular position, angular velocity, and angular acceleration. Graphs of angular position and angular velocity as a function of time are shown.
If the wheel has a negative initial angular velocity and slows down (angular speed decreases), is the angular acceleration positive or negative?
q = q_{0} + w_{0}t + (1/2)at^{2} q_{0} = rad w_{0} = rad/s a = rad/s^{2}
q = q_{0} + w_{0}t + (1/2)at^{2}
q_{0} = rad
w_{0} = rad/s
a = rad/s^{2}
For each of the following simulations, decide whether the angular velocity is positive, negative, or zero and whether the angular acceleration is positive, negative, or zero.