In 2.10 h, a balloon drifts 16.9 km north, 5.16 km east, and 3.23 km upward from its release point on the ground. Find (a) the magnitude of its average velocity and (b) the angle its average velocity makes with the horizontal. (a) Number 8.55 (b) Number 79.63 Units Units km/h *(degrees)
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