QUIZ 6   4, 10, 11, 12, 26, 37, 38, 47, 54 

TURN INS
4.    0.290
10. (a) 4.64 m/s2. (b) 105 (N)
12. (a) 230 (m)  (b)
26. 2640 km
38. (a) 13 m/s   (b) 2.2 h
54. (a) 31.0 (N)   (b) 3.53 m/s