Please help me solve the following problems. Show details and illustrations. Thank you! * A truck is 300 kilometers due east of a car and is traveling west at a constant speed of 30km/hr. Meanwhile, the car is going north at a constant speed of 60 km/hr. Find:         (a) At what rate are they separating or approaching after 2 hours?                  (b) At what time are they closest to each other?

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