Free Fall with Camera

Neža Poljanc
neza.poljanc@gmail.com
Osnovna šola Križe

Povzetek

Pri pouku fizike v 9. razredu obravnavamo gibanje. Ena izmed tem je prosti pad. V učbeniku je predlagano, da pospešek padanja ocenimo pri poskusu z brnjačem. Sama sem se odločila za sodobnejšo metodo z uporabo fotoaparata, računalniško obdelavo slike s programom PhotoFiltre in uporabo programov Microsoft Word in Graph za izdelavo preglednic in grafov. Izračunani pospešek s tako dobljenimi podatki je precej natančnejši kot z uporabo brnjača, metoda dela pa je otrokom zanimivejša in razumljivejša.

Ključne besede: prosti pad, težni pospešek, fotoaparat, obdelava podatkov.

Abstract

Physics lessons in the ninth grade deal with movement. One of the units includes free fall. The textbook suggests assessing the acceleration of the fall by performing the simple buzzer experiment. Personally, I decided to use an advanced method which includes using a camera, processing a photo with the PhotoFiltre computer programme and finally using programmes Microsoft Word and Graph to create charts and graphs. As a result, the derived acceleration is by far more exact than the one using the buzzer. Furthermore, children seem to find the method interesting as well as intelligible.   

Key words: free fall, weight acceleration, camera, data analysis