1.2 Motion Along a Straight Line 9. A person takes a trip, driving with a constant speed of 89.5 km/h, except for a 22 minute rest stop. If the person's average speed is 77.8 km/h. (a) how much time is spent on the trip and (b) how far does the person travel? ticle moving along an x axis is given by r = 12t2 – 2t³, where
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