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For more information, please see full course syllabus of AP Physics C/Mechanics
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Lecture Comments (6)

1 answer

Last reply by: Jamal Tischler
Thu Jan 1, 2015 2:09 PM

Post by Penny Shrum on June 12, 2013

Professor Jishi says something like..."if delta t is extremely small, then the object cannot travel a large distance". (Around 36 min into video). I remember hearing that as speed approaches the speed of light, newtonian mechanics breaks down or no longer work - this is where relativity come in. Is this related to the fact that if the speed is extremely fast (as light travels), then the distance traveled in an extremely small time period could be relatively large? or does this simply not have anything to do with that statement? I am just starting my study of physics at this level, so forgive me if there is an obvious answer?

1 answer

Last reply by: Maximillian Lanander
Sat Jan 26, 2013 6:23 AM

Post by Maximillian Lanander on January 26, 2013

In case anybody is having a bad day and manages to get confused, [0,10s] -> is indeed a distance traveled by 25m.

1 answer

Last reply by: Jamal Tischler
Thu Jan 1, 2015 2:11 PM

Post by manish digitalfilms on December 16, 2012

velocity is rate of change of displacement. At any particular instant there will be no, i think instantaneous velocity is just meaningless.

average velocity is total displacement divided by total gives overall rapidity of motion.

But what does instantaneous velocity give?

Motion in One Dimension

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
    • Position, Distance, and Displacement
    • Position of the Object
    • Distance Traveled by The Object
    • Displacement of The Object
  • Average Speed Over a Certain Time Interval 14:46
    • Example Of an Object
    • Example: Calculating Average Speed
  • Average Velocity Over a Time Interval 22:22
    • Example Calculating Average Velocity of an Object
  • Instantaneous Velocity 30:45
  • Average Acceleration Over a Time Interval 40:50
    • Example: Average Acceleration of an Object
  • Instantaneous Acceleration 47:17
    • Example: Acceleration of Time T
    • Example with Realistic Equation
  • Motion With Constant Acceleration: Kinematics Equation 53:39
    • Example: Motion of an Object with Constant Acceleration
  • Extra Example 1: Uniformly Accelerated Motion
  • Extra Example 2: Catching up with a Car
  • Extra Example 3: Velocity and Acceleration