I have an upcoming physics test on Monday and I am feeling extremely anxious about it. If you have any straightforward formulas or helpful advice that you could share, I would be immensely grateful for your assistance. Thank you! Please answer the following questions.

20. A washing machine spin dries clothes. It starts spinning at 20 rad /s and slows down to 8 rad /s while turning through 500 revolutions. a. What is the angular acceleration? b. How much time does it take to slow down? a ) - Q. 054 rad/s [a. 0.34 rad / $2, 36-s] " b ) 2225 21. A gyroscope rotates through and angle of 200 radians while accelerating from rest at 2.5 rad / s2. a. How long does it take to reach 200 radians? b. What is it final angular velocity? c. What is the linear velocity at its edge (R = 0.05 m)? [a. 12.6 s, b. 31.6 rad/s, c. 1.6 m/s] 22. A breeze causes a pinwheel (starting from rest). To accelerate at 0.4 rad / s2 for 9 seconds. a. How many radians does it turn through? b. How many revolutions will it make? [a. 16.2 rad, b. 2.57 rev] 23. How long will it take for a basketball spinning on someone's finger to stop if it undergoes and angular acceleration of -0.15 rad /s and is traveling at 27 rad/s initially? How many revolutions will it make? [180 s, 387 rev]