No, most half pipes are best described as two quarter circles connected by a flat in between and straight vertical extensions at the top. This is mostly for ease of construction, as building smooth consistent parabolas is quite technical, especially compared with the ease of building circles with constant radius. The difference in the smoothness of transition would be negligible, although not zero.
A curve. It would be called a parabolic curve.
No.
No, there is no parabola shape on the arc. The legs are parallel lines connecting to the arch which is an half-circle.
Skateboarding on mini-ramps and half pipes
Tranny skateboarding is when you skate in a transition. A transition is a ramp that is sort of bent, like a half pipe/mini pipe.
the main equipment you need for skateboarding is the board itself, with wheels, etc. Then you need a safety helmet. After that, something like a half-pipe where you can practice your skateboarding is helpful.
Some uses for a half pipe would be in reference to sporting competitions. Snowboarding, skateboarding and BMX bike competitions all utilize the half pipe to perform tricks.
The vertex is not affected by the direction that the parabola is facing. The vertex is the place where the two sides of the parabola meet. It is in the middle divides the shape in half. If you picture yourself looking at a bowl from the side and then imagining it as two dimensional, it would look like a parabola but for all of the filled in parts of the graph and the fact that the sides of the bowl don't continue on forever. The vertex is the bottom of the bowl, where the sides meet. You measure a vertex as you would a point; with a coordinate.
I think he was 40 or 39 in a Half in 2008
One cool skateboarding move is the 900. Which is when you spin around two and a half times on your skateboard Well your almost right you grab the front of your board and then spin two and a half times and theres the darkslide or the McTwist
Relationship between radius and area of a circle is nonlinear. Area = pi * radius^2, so it is like a quadratic. If you graphed radius on the horizontal, and area on the vertical, it would be a parabola (actually a half of a parabola, since you cannot have a negative radius).
NO! Half of the pro skateboarders have like a 10th grade education.