AP Homework

Ch. 9 – part 2

(Answers)

Ch. 9

|∆��| � �|∆��| � �2100 �� �65.4 �� ��1000 � �3600 �� � � 3.8 � 10� � ∙ ��

(c) The vector ∆�� points at an angle θ south of east, where

� � tan#$ �41 ��51 �� � � 39°

32.

43.

51.

53.

'( � 12 �� ) *��+ � 12, �+�-+�� ) *�.

/0 � 12��-+ 1 12, �+�-+�� ) *�. � 12��-+ 21 1 �� ) *3 � 12��-+ � *� ) *�

55.

63.

65.

66.

'( � 12��45+ ) 12��46+ � 12 �2.0���15�+ ) 20+ ) 10+ ) 15+� � 8.0 � 10+7

'- � 12��5+ ) 12��6+ � 12 �2.0��15+ ) 30+ ) �110�+ ) 5+� � 1.3 � 1087

71.

72.

79.