M o t i o n Is your table moving ? M o t i o n A r e f e r e n c e p o i n t i s n e e d e d t o d e s c r i b e m o t i o n.

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Presentation transcript:

M o t i o n

Is your table moving ?

M o t i o n A r e f e r e n c e p o i n t i s n e e d e d t o d e s c r i b e m o t i o n.

M o t i o n A c h a n g e i n p o s i t i o n r e l a t i v e t o a r e f e r e n c e p o i n t.

? ? ? ? ? zY o u a r e a p a s s e n g e r i n a c a r s t o p p e d a t a s t o p s i g n. O u t o f t h e c o r n e r o f y o u r e y e, y o u n o t i c e a t r e e o n t h e s i d e o f t h e r o a d b e g i n t o m o v e f o r w a r d.

? ? ? ? ? zA p r o b a s e b a l l p i t c h e r c a n t h r o w a m p h f a s t b a l l. D e s c r i b e h o w a m p h f a s t b a l l c a n b e m e a s u r e d t r a v e l i n g a t a s p e e d o f m p h.

zT h e w o r l d y o u l i v e i n h a s 3 d i m e n s i o n s ; l e n g t h, w i d t h, a n d h e i g h t. S u p p o s e y o u l i v e d i n a w o r l d w i t h o n l y 2 d i m e n s i o n s ; l e n g t h a n d w i d t h. M o t i o n i n t h i s w o r l d c a n o n l y b e i n t h o s e t w o d i m e n s i o n s. Y o u h a v e e x p l o r e d t h i s w o r l d a n d f o u n d t h e r e i s a b a r r i e r a r o u n d y o u r w o r l d y o u c a n n o t c r o s s.

S p e e d S p e e d T h e d i s t a n c e t r a v e l e d b y a m o v i n g o b j e c t p e r u n i t o f t i m e. S p e e d = d i s t a n c e t i m e

S p e e d S p e e d A c a r t r a v e l s m i l e s i n 4 h o u r s. W h a t i s t h e s p e e d o f t h e c a r ? zS = d / t zS = m i l e s / 4 h o u r s zS = 5 0 m i l e s p e r h o u r

C o n s t a n t S p e e d S p e e d t h a t d o e s n o t c h a n g e.

A v e r a g e S p e e d T o t a l d i s t a n c e d i v i d e d b y t o t a l t i m e.

S p e e d c a l c u l a t i o n A r i f l e b u l l e t t r a v e l s f e e t i n 4 s e c o n d s. W h a t i s t h e a v e r a g e s p e e d o f t h e b u l l e t ?

S p e e d c a l c u l a t i o n S = d / t S = f e e t / 4 s e c S = f e e t / s e c

S p e e d c a l c u l a t i o n A r i f l e b u l l e t t r a v e l s f e e t i n 4 s e c o n d s. W h a t i s t h e s p e e d o f t h e b u l l e t i n m i l e s p e r h o u r ?

S p e e d c a l c u l a t i o n m i l e s p e r h o u r

V e l o c i t y V e l o c i t y V e l o c i t y i s s p e e d i n a g i v e n d i r e c t i o n.

V e l o c i t y V e l o c i t y Wind blowing at 20 mph Plane traveling at 100 mph What speed and direction does the plane travel?

V e l o c i t y V e l o c i t y Speed and direction of the plane V e l o c i t y i s a v e c t o r q u a n t i t y. A d d v e c t o r s h e a d t o t a i l.

D i s t a n c e - T i m e G r a p h D i s t a n c e - T i m e G r a p h zD i s t a n c e i s p l o t t e d o n t h e v e r t i c a l a x i s. zT i m e i s p l o t t e d o n t h e h o r i z o n t a l a x i s. zC o n s t a n t s p e e d i s s p e e d t h a t d o e s n o t c h a n g e. zC o n s t a n t s p e e d p r o d u c e s a s t r a i g h t l i n e g r a p h.

M o t i o n E n d