(a) Find the angular displacement after 2.00 s, in both radians and revolutions. Use Equation 7.8, setting w; = 1.90 rad/s, = 4.00 rad/s, and t = 2.00 s. Convert radians to revolutions. (b) What is the angular speed of the wheel at t = 2.00 s? Substitute the same values into Equation 7.7. A0 = w;t+ wit + at A0 = (1.90 rad/s) (2.00 s) + (4.00 rad/s) (2.00 s) = 30.4 X rad Your response differs from the correct answer by more than 100%. A0 E (Aw rad) (1.00 rev/2z rad) = 0.1592 X rev Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. @= @ + at = 1.90 rad/s + (4.00 rad/s) (2.00 s) @= 15.2 X rad/s Your response differs from the correct answer by more than 10%. Double check your calculations.