## ΒΑΡΥΤΗΤΑ ΚΑΙ ΕΠΙΤΑΧΥΝΣΗ

Απευθύνεται σε μαθήτριες και μαθητές του Λυκείου,Πραγματεύεται τις κοινές διαπιστώσεις παρατηρητή όταν βρεθεί μέσα σε κινούμενο ανελκυστήρα ή μέσα σε βαρυτικό πεδίο.

## Σάββατο 13 Σεπτεμβρίου 2014

### 1st LESSON - Mechanics

Galileo Galilei

Galileo designed accurate sketches of moon. He used technics of a painter. He was looking trough a telescore with  one eye and the shape of # on the wall with the other eye. The combination from  the icons of his eyes was a technic of a painter

He inspired the theory of pendulum in the church.
He calculated the time using his pulse.

or using water.

Free fall on the moon ( hammer -Feather)

You can show free fall with cheap and everyday objects.
The left bottle is filled with water and the right bottle is almost empty!!!﻿

CHALLENGE YOUR STUDENTS- MAY BE THE NEXT GALILEO IS IN YOUR CLASS
If you let a stone to fall from a great height you will observe the following measurements:

5 m in 1 s
20 m in 2 s
45 m in 3 s
???m in 4 s
??? m in 5 s      , Can you guess how many meters the stone falls in 4 s or 5 s. What conclusion can you deliver?

Paper-pen

VIDEO????