The answer is D) second/meter
A) 
The angular acceleration of the wheel is given by
where
is the initial angular velocity of the wheel (initially clockwise, so with a negative sign)
is the final angular velocity (anticlockwise, so with a positive sign)
is the time interval
Substituting into the equation, we find the angular acceleration:
And the acceleration is positive since the angular velocity increases steadily from a negative value to a positive value.
B) 3.6 s
The time interval during which the angular velocity is increasing is the time interval between the instant 
where the angular velocity becomes positive (so, 
) and the time corresponding to the final instant 
, where 
. We can find this time interval by using
And solving for 
we find
C) 2.4 s
The time interval during which the angular velocity is idecreasing is the time interval between the initial instant 
when 
) and the time corresponding to the instant in which the velovity becomes positive 
, when 
. We can find this time interval by using
And solving for we find
D) 5.6 rad
The angular displacement of the wheel is given by the equation
where we have
is the initial angular velocity of the wheel
is the final angular velocity
is the angular acceleration
Solving for 
,
A product line is a group of
products offered by a firm that are closely related to each other, either in
terms of how they work, or the customers they serve. An example is the production
of wine, beer, spirit, whiskey, vodka. These products may be different but they
are related because they are all alcohol liquor.
Mike was running at a higher speed than Mitchell
