Total distance = 200 + 200 = 400 km and total time = 3 + 2 = 5 h. Average speed = 400/5 = 80 km/h. Since displacement is zero, average velocity = 0 km/h.
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Total distance = 200 + 200 = 400 km and total time = 3 + 2 = 5 h. Average speed = 400/5 = 80 km/h. Since displacement is zero, average velocity = 0 km/h.