Key usage H: hide/show Unit and Slide Up and Down arrows: go to next/previous Unit Right and Left arrows: go to next/previous Slide space: go to next Unit R: reset current slide
Thanks to Java_Programmer for How does Rolling on Slopes work? Thanks to MathMathMath for his Pen Graphics Tutorials Thanks to _youtubeN1 for his Cross Product Video for direction of vectors: https://youtu.be/A3OuFLHum6w Very nice applet on Cross product at https://mathinsight.org/applet/cross_product Arrowheads are from: Angle Between Two Vectors by HYDRA_
