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When a motor cyclist takes a U-turn in 4...

When a motor cyclist takes a U-turn in 4s what is the average angular velocity of the motor cyclist?

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When the motor cyclist takes a U-turn, angular displacement, `theta=pi` rad and t=4s
The average angular velocity,
`omega=(theta)/(t)=(pi)/(4)=7.855xx10^(-10)=0.7855 rad s^(-1)`
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