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Physics Assignment

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A bacterium moves with a speed of 2.3 µm/s across a petri dish with radius r = 9.2 cm. How long does it take the bacterium to traverse the petri dish along its diameter?

Sitting beside a friend on a park bench, you grab her hat and start running in a straight line away from her. Over the first 16.0 m, you accelerate at 1.5 m/s2 up to your maximum running speed. You then continue at your maximum running speed for 13.0 s more before your friend catches you. How far from the bench did you get before being caught? How long did it take for your friend to catch you?