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Questions and Answers
What is the primary factor that affects the motion of an object on a rough surface?
What is the primary factor that affects the motion of an object on a rough surface?
- Friction (correct)
- Inertia
- Compound motion
- Projectile motion
According to Galileo, what is the outcome of an object in motion on a flat and frictionless surface?
According to Galileo, what is the outcome of an object in motion on a flat and frictionless surface?
- It accelerates rapidly
- It changes direction
- It continues moving at a constant velocity (correct)
- It slows down and stops
What is the main difference between Aristotle's and Galileo's view of projectile motion?
What is the main difference between Aristotle's and Galileo's view of projectile motion?
- Aristotle believed in abrupt falling, while Galileo believed in a curved trajectory (correct)
- Aristotle believed in a flat trajectory, while Galileo believed in a curved trajectory
- Aristotle believed in compound motion, while Galileo did not
- Aristotle believed in a curved trajectory, while Galileo believed in a straight trajectory
What type of motion does Galileo's concept of compound motion describe?
What type of motion does Galileo's concept of compound motion describe?
What is the purpose of Galileo's thought experiments?
What is the purpose of Galileo's thought experiments?
Which of the following is an example of inertia?
Which of the following is an example of inertia?
What is the primary difference between Aristotle's concept of natural motion and violent motion?
What is the primary difference between Aristotle's concept of natural motion and violent motion?
According to Aristotle, what would happen to a rock thrown upward?
According to Aristotle, what would happen to a rock thrown upward?
What is the underlying principle behind Aristotle's idea that smoke rises in the atmosphere?
What is the underlying principle behind Aristotle's idea that smoke rises in the atmosphere?
What is the implication of Aristotle's view that no motion takes place without a 'mover' in contact with an object?
What is the implication of Aristotle's view that no motion takes place without a 'mover' in contact with an object?
How does Aristotle's concept of motion differ from Galileo's inference about objects in a vacuum?
How does Aristotle's concept of motion differ from Galileo's inference about objects in a vacuum?
What is the key difference between Aristotle's concept of natural motion and the concept of inertia?
What is the key difference between Aristotle's concept of natural motion and the concept of inertia?
According to Aristotle, what type of motion would the soccer ball exhibit after being kicked by the player?
According to Aristotle, what type of motion would the soccer ball exhibit after being kicked by the player?
Which of the following scenarios would Galileo classify as an example of vertical motion?
Which of the following scenarios would Galileo classify as an example of vertical motion?
According to Aristotle, what would be the primary cause of the bullet's motion after being fired by the police officer?
According to Aristotle, what would be the primary cause of the bullet's motion after being fired by the police officer?
Galileo's experiments on motion challenged which of Aristotle's concepts?
Galileo's experiments on motion challenged which of Aristotle's concepts?
Which of the following best describes the motion of the water vapor coming out of the kettle, according to Galileo?
Which of the following best describes the motion of the water vapor coming out of the kettle, according to Galileo?
What is the primary difference between Galileo's and Aristotle's views on the motion of objects with different weights?
What is the primary difference between Galileo's and Aristotle's views on the motion of objects with different weights?
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Study Notes
Horizontal Motion
- An object in motion will continue to be in motion if unimpeded, without the need for an external force.
- On a flat and frictionless surface, an object will continue moving unimpeded.
- Friction on a surface can slow down and stop an object's motion.
Projectile Motion
- Projectile motion is the combination of horizontal and vertical motions.
- Galileo believed that projectiles follow a curved trajectory, contrary to Aristotle's view.
- A cannonball launched into the air moves in a curve rather than falling abruptly to the ground.
Aristotle's Views on Motion
- Aristotle's view of motion was based on observations and stood for many years.
- Motion can be either natural motion or violent motion.
- Natural motion occurs when an object moves and returns to its natural state, depending on its composition.
- Violent motion occurs when an object moves after an external force, such as pushing or pulling, is applied.
Natural Motion
- An object made of material similar to earth will return to earth, while an object similar to air will return to the air.
- Smoke goes up in the atmosphere because it resembles air.
- A rock mostly resembles the earth, so when it's thrown upward, its natural tendency is to go back to earth.
Violent Motion
- Violent motion occurs when an object is pushed or pulled.
- No motion will take place unless there is a 'mover' in contact with an object.
Galileo's Views of Motion
- Galileo challenged Aristotle's concepts of motion through actual and thorough experiments.
- He believed that vertical motion is downward due to gravity.
- Objects fall at the same rate, regardless of their weight, considering air resistance is ignored.
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