Law of Inertia and Historical Background

Flashcards covering the definition of the Law of Inertia, the concept of inertia, and the historical contributions of Aristotle and Galileo Galilei.

What is another name for the First Law of Motion?

Law of Inertia

According to the Law of Inertia, what happens to an object at rest?

It remains at rest unless acted upon by an external force.

According to the Law of Inertia, how does an object in motion behave?

It will continue moving at a constant speed and direction unless acted upon by an external force.

How is inertia defined in the lecture notes?

Inertia is the tendency of an object to resist change in its motion.

What is the relationship between mass and inertia?

The greater the mass, the greater the inertia.

Why are heavy objects harder to move or stop than light objects?

They possess greater inertia due to their larger mass.

During what time period did Aristotle live?

$$384-322 BC$$

What was Aristotle's belief regarding the natural state of objects?

He believed that objects naturally come to rest.

According to Aristotle, what is required to keep an object moving?

A force is needed to keep an object moving.

What did Aristotle believe about how different weights fall?

He believed that heavier objects fall faster than light objects.

During what time period did Galileo Galilei live?

$$1564-1642$$

Whose ideas did Galileo Galilei challenge regarding motion?

He challenged the ideas of Aristotle.

What did Galileo Galilei use to conduct his research into motion?

He conducted experiments with motion.

What did Galileo Galilei identify as the cause for moving objects to stop?

Friction.

What did Galileo suggest would happen to objects in motion if friction were removed?

He suggested that without friction, objects would continue moving.