1. Galileo Galilei

2. Born 1546 Pisa

3. Died 1642 Florence

4. Aristotle’s Motion Until Galileo, Aristotle’s theory on motion stood. –Heavier objects fall faster –Natural motion is toward earth –Any other motion was violent motion and required a force to move it.

5. Galileo Galileo quickly became aware that his talents lay in mathematics. He rose through the academic ranks at various universities in Italy One of his early accomplishments was suggesting that theories could be tested through experiment.

6. Galileo’s Experiments Nova Experiments

7. Disproving Aristotle Heavier objects do not fall faster. –Proved via experiment and stones tied together thought experiment Projectile motion –Vertical and horizontal motion act independently Natural motion is circular

8. Inclined Plane Experiment

9. Galileo’s Motion An object remains in motion unless acted upon by other forces. Natural motion is circular Galileo also invented the telescope and used it to study the heavens Persecuted by church for supporting the Sun centered model