Watch fullscreen 5 years ago

# A Basic Acceleration Example Problem and Understanding Acceleration Direction

This video starts with a simple acceleration problem and then addresses a commonly held misconception that a negative acceleration always means you are slowing down. I do this by way of examples. Kate (my wife) drove the Prius with a camera suction cupped to the window and videoed me riding my bike several times. In the end I ended up with four different examples on the screen at once and 25 different video layers to describe it all. I am really proud about how well it worked. Enjoy.\r
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Content Times: (click time to access)\r
0:40 Seeing the problem\r
1:14 Translating the words to Physics\r
1:54 Solving the problem\r
3:50 Why is the number on the bike positive?\r
4:48 How can the bike be speeding up if the acceleration is negative?\r
5:50 Comparing velocity and acceleration directions\r
7:28 All four bike examples on the screen at the same time\r
7:53 Why isnt there a direction on our answer?\r
8:51 Outtakes or how the bike riding was filmed\r
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Walking Position, Velocity and Acceleration as a Function of Time Graphs\r
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Introduction to Acceleration with Prius Brake Slamming Example Problem\r