A solid body rotates an angle \\theta about a stationary axis according to the law \\theta=6 {t}-2 {t}^{3}. What is the mean value of angular velocity over the time interval between {t}=0 and the time when the body comes to rest?

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A solid body rotates an angle θ about a stationary axis according to the law θ=6t−2t3. What is the mean value of angular velocity over the time interval between t=0 and the time when the body comes to rest?

1rad∕s
2rad∕s
3rad∕s
4rad∕s

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