With constant angular acceleration , the disk achieves an angular velocity at time according to
and angular displacement according to
a. So after 1.00 s, having rotated 21.0 rad, it must have undergone an acceleration of
b. Under constant acceleration, the average angular velocity is equivalent to
where and are the final and initial angular velocities, respectively. Then
c. After 1.00 s, the disk has instantaneous angular velocity
d. During the next 1.00 s, the disk will start moving with the angular velocity equal to the one found in part (c). Ignoring the 21.0 rad it had rotated in the first 1.00 s interval, the disk will rotate by angle according to
which would be equal to
S= frequency x wavelength
s=17 x 5
s=85mm/s
Answer: D
Explanation: B and C are irrelevant in this context, there is no reason to consider them. The answer is D as if the ball pushes the bat left, the bat pushes back on it in the opposite direction (to the right)
Answer: the answer would be 200v I'm pretty sure :)
Explanation: