Today is class we learned about Kinematics (Uniform Acceleration) which is the study of the same acceleration. This is a picture of my sister wave boarding down a slope. In class we did a very similar activity where two students started at the top of the hill and one skateboarded down and the other sat on a roller thingy. My sister in this picture did the exact same thing. She started at the top (without pushing off) and rolled down the hill. My observations on the time were something very similar to what we all witnessed in class. Towards the end of the hill she began to somewhat slow down because the ground was leveling out and became flat again. When we timed it in class it was interesting to see the different relationships between the distance vs time graph (exponential) and the velocity vs time graph (linear).
Here's a link about a snowboarder coming down a steep hill getting faster and faster as he continues down the hill.
http://www.youtube.com/watch?v=HFOJyBxkPlI
I hope you asked your sister... nicely... to help you do this :p
ReplyDeleteAhh, I hope we don't get too confused now that there are so many graphs! Nice post, very informative.
This post really helps me understand acceleration better. Nice example.
ReplyDeletegreat explanation of what we did today! (and supah cool video)
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