Answer: For anyone in Connexus. Just took the test.
1. A. Magnitude: 5km; direction: 73.7° east of north.
2. B. Acceleration
3. D. Magnitude: 6.40 blocks; direction: 38.7° east of north
4. B. 18 km
5. B. 70 m/s
6. C. It has a magnitude of 25 m.
7. C. In opposite directions
8. A. A physical quantity described by a single number.
9. A. 8.0 mm
10. B. A measurement having both magnitude and direction.