The famous scientist Galileo Galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. By changing the slope, he could study how the speed at which the ball rolled was affected. What was the independent variable in Galileo's experiment?
1. the speed of the ball
2. the slope of the plane
3. whether the ball moved
4. what the ball was made of

The independent variable of Galileo Galilei experiment is

1) the speed of the ball

Explanation:

Galileo Galilei (1564- 1642) was one of the foremost scientist to carefully consider what was going on.

One of the key ideas is that everything depends on time (t) so it plays the role usually assigned to ' x ' in the Cartesian setup and is recorded horizontally .

Galileo experiment proves that objects fell with the same acceleration

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