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Compute all parts of following question:
Question: A motorist traveling with a constant speed of 20m/s passes a school-crossing corner, where the speed limit is 10m/s. Just as the motorist passes, a police officer on a motorcycle at the corner starts off in pursuit with constant acceleration of 2m/s2.
Part A: How much time elapses before the police catches up the motorist?
Part B: What is the officer's speed limit at that point?
Part C: What is the total distance each vehicle has traveled at that point?
Could someone please show me the work and explain how to get the answer.
Describe what quantity shows the measurements are consistent with a large amount of dark matter:
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