1.

a. b. c. d.
Magnitude = 3.6
Magnitude = 4.1
Magnitude = 3.6
Magnitude = 3

2.

a. b. c. d.

 

3.

a. b. c. d.

 

4. a. Vector BA
b. Vector AD
c. True
d. Vector AD
e. Vector CB

5. 

6.

7. 

8. With the wind directly behind him, his speed would be 20 km/h, if his legs could go fast enough!

9. 

10.