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Start: give an initial “x” velocity;

no initial “y” velocity

floor

1

2

3

0

What is the path of the red balls ?

x

h

Projectile motion (parabolic path)

y

How long does it take the different balls to drop to the floor?

Here is a page from one of Galileo's manuscripts in which he writes down the figures he obtained in performing this experiment himself.

MEASURE! QUANTIFY!

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