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More on graphical solutions to projectile motion problems

February 27, 2012

In my previous post on solving projectile motion problems graphically, I mentioned that it should be possible to overlay the trajectory of the projectile onto this construction and animate it in geogebra. After some fiddling with geogebra, I was able to produce this video.

In the animation, \Delta v increases with time, and the average velocity is computed as the sum of v_i and \frac{\Delta v}{2}. When this vector is scaled by the time (\vec{\Delta r}=\vec{v}_{avg}t), you get a displacement vector from the origin to the current location of the projectile.

If you want to play with the improved geogebra file, here’s a link.

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