Gravity and Vertical Motion Problem - Calculus

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Uploaded by on Jan 10, 2012

Gravity and Vertical Motion Problem - Calculus. In this video, a penny is thrown downward from a tower. We want to determine how long it takes to hit the ground.

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Uploader Comments (patrickJMT)

  • Thanks! This was a cool lesson. When your solving for the quadratic equation, couldn't you save yourself some pain and complete the square?

  • @cornboy3 99% of people i have met would rather poke themselves in the eye with a stick than to use completing the square

  • I don't see why people care what units he's using. The units are just an arbitrary choice for something like this since he isn't modelling a real-life situation. He could use lightyears if he wanted to, but he's just using the units he's most familiar with and uses most (as will be the case for most Americans), which is feet. With that said, fuck the imperial measurement system.

  • @OCNmeticadpa my thoughts, in word form : )

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  • The coolest lesson so far! :D I like it how you apply all those math stuff like derivatives (which I never use in daily life) to this real life situation. Thanks! :)

  • You are an amazing teacher and are very helpful, thank you ! Coming from a future engineer : )

  • thought you were going to play hangman for a second there :)

  • @OCNmeticadpa Thats awesome.. "While not considered toxic, the data about gallium are inconclusive. Some sources suggest that it may cause dermatitis from prolonged exposure; other tests have not caused a positive reaction." .. and not too harmful either !

  • @georgeda Why should that be a reason? I think it's stupid that the U.S.A's 'official' system of measurement still involves the archaic imperial units.

  • You are awesome.

  • @billtruttschel Have it as a coefficient of friction my guess

  • How would one factor in air resistance?

  • @Skiddla A joke among chemists used to be that they'd make a spoon out of gallium, which has a very low melting point, and give it to each other to stir their tea with; of course once the spoon hit the water, it would melt and thus "disappear" into their tea.

  • "Fun arithmetic" ... I LIKE IT! :L

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