Apps. and Interpretation for IBDP Maths Ebook 2 | Page 340

Your Practice Set – Applications and Interpretation for IBDP Mathematics
33.2
( a )
� 1
� �
�
3a�2b � 8
�19� �
�
( b )
5.90
33.3
( a )
4.46
�
( b ) ( i ) OA � 7
( ii ) AOB ˆ � 50.5 33.4 ( a ) 9.09
�
( b ) ( i ) OA � 13
Exercise 34
( ii ) OAB ˆ � 45.7
34.1
( a )
10
1 r � � � � �
�t �
� � � � 0 �
� 2�
( b )
( 15,10 )
( c ) ( i ) ( �13 , � 4 )
( ii ) ( �45 , � 20 ) ( d ) ( � 25 , 0 )
( e )
� �25� �
�1� r �� �
�t �
� � 0 � �
�1�
( f )
25.3
34.2
( a )
13
( b )
3
12 r � � � � �
�t � �
�
� � 4� � 5
�
( c )
�0�
� � �6�
( d )
x �
2
( e )
135
( f )
3.5 s
34.3 ( a )
( b )
�400� � � �70 kmh
� �4
� � � 406 kmh �1
�1
( c )
� �800� �
400� � � �
� r � 160 � t
�70 � 8 � �
�4
� � � �
�
( d )
11:00
( e )
( 20 , 0 , 0 )
( f ) 10:24
34.4
( a )
� 20
� �5� � �
� � r � �10 � t
5 � 0
� �0� � �
� �
( b )
p �
4
( c )
� 5 � � � �5 s
��5�
� �
�1
( d )
� 20� � 5
� � � �
� r � 20 � t
�5 � 20� �
�5� � � �
�
( e )
4.47
( f )
3.20 seconds after the start of
the game
330
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