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Your friend kicks a soccer ball from the ground up to you where you are standing...
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Your friend kicks a soccer ball from the ground up to you where you are standing on the balcony of a building. The trajectory of the ball is sketched in blue, and is described (to good approximation) by a quadratic function , where is the height of the ball and its horizontal position. Let us choose the and axes as sketched in red, with their origin at the position where your friend kicked the ball. Without doing any calculations, just by looking at the sketched trajectory (which is an graph), choose the correct statement about the values of , and respectively.
Jou vriend skop 'n sokkerbal van die grond af op na jou toe weer jy op die balkon van 'n gebou staan. Die trajek van die bal is geskets in blou, en word (as goeie benadering) beskryf deur 'n kwadratiese funksie , waar die hoogte van die bal en sy horisontale posisie is. Ons kies die en die asse soos in rooi geskets, met hulle oorsprong by die posisie waar jou vriend die bal geskop het. Sonder om enige berekeninge te doen, deur net na die trajek te kyk (wat 'n grafiek is), kies die korrekte stellings oor die waardes van , en onderskeidelik.