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Physics 2A Lecture 3: Sept 28, 2010

Physics 2A Lecture 3: Sept 28, 2010courses.physics.ucsd.edu/2010/Fall/physics2a/lec3.pdfLecture 3: Sept 28, 2010 Average & Instant. Acceleration Acceleration A x On A v x- t Graph

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Page 1: Physics 2A Lecture 3: Sept 28, 2010courses.physics.ucsd.edu/2010/Fall/physics2a/lec3.pdfLecture 3: Sept 28, 2010 Average & Instant. Acceleration Acceleration A x On A v x- t Graph

Physics 2A Lecture 3: Sept 28, 2010

Page 2: Physics 2A Lecture 3: Sept 28, 2010courses.physics.ucsd.edu/2010/Fall/physics2a/lec3.pdfLecture 3: Sept 28, 2010 Average & Instant. Acceleration Acceleration A x On A v x- t Graph

Average & Instant. Acceleration

Page 3: Physics 2A Lecture 3: Sept 28, 2010courses.physics.ucsd.edu/2010/Fall/physics2a/lec3.pdfLecture 3: Sept 28, 2010 Average & Instant. Acceleration Acceleration A x On A v x- t Graph

Acceleration Ax On A vx- t Graph

Page 4: Physics 2A Lecture 3: Sept 28, 2010courses.physics.ucsd.edu/2010/Fall/physics2a/lec3.pdfLecture 3: Sept 28, 2010 Average & Instant. Acceleration Acceleration A x On A v x- t Graph

Examining a vx – t Graph

Page 5: Physics 2A Lecture 3: Sept 28, 2010courses.physics.ucsd.edu/2010/Fall/physics2a/lec3.pdfLecture 3: Sept 28, 2010 Average & Instant. Acceleration Acceleration A x On A v x- t Graph

Acceleration & The x-t GraphRemember Calculus ?

Page 6: Physics 2A Lecture 3: Sept 28, 2010courses.physics.ucsd.edu/2010/Fall/physics2a/lec3.pdfLecture 3: Sept 28, 2010 Average & Instant. Acceleration Acceleration A x On A v x- t Graph

The x-t Graph For Same Motion

Page 7: Physics 2A Lecture 3: Sept 28, 2010courses.physics.ucsd.edu/2010/Fall/physics2a/lec3.pdfLecture 3: Sept 28, 2010 Average & Instant. Acceleration Acceleration A x On A v x- t Graph

Motion With Constant Acceleration

Motion diagram showing position, velocity &acceleration ofan object

Page 8: Physics 2A Lecture 3: Sept 28, 2010courses.physics.ucsd.edu/2010/Fall/physics2a/lec3.pdfLecture 3: Sept 28, 2010 Average & Instant. Acceleration Acceleration A x On A v x- t Graph

The ax– t Graph For Constant ax

Page 9: Physics 2A Lecture 3: Sept 28, 2010courses.physics.ucsd.edu/2010/Fall/physics2a/lec3.pdfLecture 3: Sept 28, 2010 Average & Instant. Acceleration Acceleration A x On A v x- t Graph

The vx-t Graph For Constant ax

Constant slope

Sum

of t

wo

piec

es

Page 10: Physics 2A Lecture 3: Sept 28, 2010courses.physics.ucsd.edu/2010/Fall/physics2a/lec3.pdfLecture 3: Sept 28, 2010 Average & Instant. Acceleration Acceleration A x On A v x- t Graph

Evolution of x vs t when ax=Constant

Page 11: Physics 2A Lecture 3: Sept 28, 2010courses.physics.ucsd.edu/2010/Fall/physics2a/lec3.pdfLecture 3: Sept 28, 2010 Average & Instant. Acceleration Acceleration A x On A v x- t Graph

Evolution of x vs t when ax=Constant