2a) 40 km

2b) 6 km West

2c) 20 km/hr

2d) 3 km/hr West

5) 29 m/s

7) 5 s

8) 3.5 hr

10) 4 s

11) 96 m/s

12) 19.6 m/s

13) 2.37 s

 

Remember that falling objects accelerate at 9.8 m/s/s (used in question 12 and question 13