Lecture 6

# Lecture 6 - Lecture 6 pls-6.1 Graphing Motion Media 1...

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Lecture 6 pls-6.1 Graphing Motion Media: 1. Tennis ball 2. Lab 2 equipment (interface, motion sensor, and cables) 1. Signs of Kinematics Quantities position () t x velocity () () dt t dx t v x = acceleration () ( ) dt t dv t a x x = x : + Æ object to right of origin, - Æ object to left of origin x v : + Æ moving to right, - Æ moving to left x a : + Æ velocity change is to right, - Æ velocity change is to left Clicker questions 1 – 5. Fill in table while doing questions. Tennis ball as object. velocity acceleration motion + 0 - 0 + + + - - + - - 0 + 0 -

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Lecture 6 pls-6.2 2. Graphical Relationships between x , v x , and a x . Example 1 Clicker question 6 . ( ) t v x = slope of ( ) t x ( ) t a x = slope of ( ) t v x (m) (s) (m/s) (m/s 2 ) (s) (s) Infinite acceleration at these points, which is impossible because force cannot be infinite! Kinks in ( ) t x are unphysical; see text box below.
Lecture 6 pls-6.3 Example 2: more realistic motion [no kinks in ( ) t x ] 0 0.5 1 1.5 2 2.5

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Lecture 6 - Lecture 6 pls-6.1 Graphing Motion Media 1...

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