Monday, June 20, 2011

Unit 3 Post - 6/20: Acceleration

Acceleration is defined as a change in velocity per unit of time measured in m/s^2. Basically it means a change in the rate of speed. Acceleration doesn't have as much to do with the specifics of position; it does however describe total displacement and defines positive acceleration as moving away from the origin while negative acceleration is moving towards the origin. 
This video is a simple recording of the fishes in my aquarium. Fishes seldom are still, they're always moving. Often they aren't moving towards a specific destination - they're just moving! This reminds me of acceleration! Acceleration, like I said, usually describes displacement opposed to destination. Fish don't move towards a destination, but they don't visit the same spot twice - so they have a lot of displacement which you can see in my video. Also, I tapped the glass during the video to scare them and make them swim faster to demonstrate a change in speed. If you watch the fish, you see how they move slowly sometimes, then speed up, then slow down, and so on! A great practical application of acceleration!

3 comments:

  1. Please be careful, Josh. Acceleration is a vector value (and not a scalar value) so acceleration is based on the vector value: velocity (and not the scalar value of speed).

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  2. Ah! Well thank you very much Sean! Now I can actually pass the test!

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  3. I wanted to thank you for this excellent read!! I definitely loved every little bit of it. I have you bookmarked your site to check out the new stuff you post. standard gravity to meters per square second

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