Mr. Callahan's Classes » Gravity http://www.nextgenlessons.com I hope you enjoy learning here Mon, 18 Dec 2017 16:27:07 +0000 en hourly 1 https://wordpress.org/?v=4.2.34 Falling From Space http://www.nextgenlessons.com/gravity/falling-from-space/ http://www.nextgenlessons.com/gravity/falling-from-space/#comments Mon, 05 Sep 2016 20:35:56 +0000 http://www.nextgenlessons.com/?p=650 Continued]]> Today we're going to deal with a lot of data about falling.

It was gathered Felix Baumgartener fell from space to earth. On the screen will be lots of data to help us understand what was happening during this. Don’t watch the whole video, just see the first 15 seconds or so and observe what the data is telling us.

On a seperate sheet of paper please answer the included questions.
1. What is happening to the altitude?

2. What is happening to his velocity?

3. Calculate his velocity at 3 points in the fall? Show your work. Either capture amplitude data and time data, or calculate the conversion from km/hr.

4. What is his acceleration? Use the velocities from question 3. Graph this (velocity is dependent variable; time is dependent) and find the slope of that graph. (Use Excel or Google Sheets.)

5. Given his initial height and our data, how long should it take him to reach the height at which he releases the parachute (2600 m)? Edit the computer model below to find the time.

6. If your model is not exactly correct, theorize factors that it might have taken into account for.

7. What happens to his velocity after the parachute is released and why?

]]> http://www.nextgenlessons.com/gravity/falling-from-space/feed/ 0 Falling In Two Dimensions with NetLogo http://www.nextgenlessons.com/gravity/falling2d/ http://www.nextgenlessons.com/gravity/falling2d/#comments Mon, 05 Sep 2016 20:34:13 +0000 http://www.nextgenlessons.com/?p=647 Continued]]> An old question is physics is, how does a bullet falling from someone’s had behave differently than one being fired from a gun? Another way to word it is “If one bullet is fired, and another is dropped, both at the same time, which hits the ground first?

Use the video below to answer the question.

We’re going to look more closely at the motion of something moving. The video below has tape marks every 10 cm. Use the video to gather data about the trajectory of the ball as it falls. It is in 8x slow motion, so each 8 seconds passed on the video equates to 1 second in reality.

Please use either Excel or Google Sheets to graph the data you gathered.

Next we're going to use a programming language called NetLogo to edit a bad computer model to fit the data that we gathered.

The model below is of the motion of the ball in freefall. Please edit it to better fit our experimental data.

]]> http://www.nextgenlessons.com/gravity/falling2d/feed/ 0 Moon Shot http://www.nextgenlessons.com/gravity/moon-shot/ http://www.nextgenlessons.com/gravity/moon-shot/#comments Wed, 02 Dec 2015 02:30:57 +0000 http://www.nextgenlessons.com/?p=204 For a rocket to make it into space it must have something called escape velocity. Adjust the angle and initial velocity of the projectile and see how the range is affected.

]]> http://www.nextgenlessons.com/gravity/moon-shot/feed/ 0 Why Doesn’t the Moon Fall Into the Earth http://www.nextgenlessons.com/gravity/why-doesnt-the-moon-fall-into-the-earth/ http://www.nextgenlessons.com/gravity/why-doesnt-the-moon-fall-into-the-earth/#comments Wed, 20 May 2015 14:03:01 +0000 http://www.nextgenlessons.com/?p=87 Continued]]> Isaac Newton is famous for understanding that the gravity in space is the same as that on Earth. It is the same universal gravity. The Moon is attracted to the earth and vise-versa. The great question is why doesn’t it ever hit us. Try to figure it out with this simulation.

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