At one instant a bicyclist is \( 30.0 \mathrm{~m} \) due east of a park's flagpole, going due so...

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At one instant a bicyclist is \( 30.0 \mathrm{~m} \) due east of a park's flagpole, going due south with a speed of \( 10.0 \mathrm{~m} / \mathrm{s} \). Then \( 30.0 \mathrm{~s} \) later, the cyclist is \( 40.0 \mathrm{~m} \) due north of the flagpole, going due east with a speed of \( 10.0 \mathrm{~m} / \mathrm{s} \). For the cyclist in this \( 30.0 \) sinterval, what are the magnitude and direction of the displacement, the magnitude and direction of the average velocity, and the magnitude and direction of the average acceleration?
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