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Projectile Motion Investigation Overview

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Projectile Motion Investigation Overview

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Questions and Answers

What is one important use of the knowledge about two-dimensional motion mentioned in the text?

Firing projectiles of war (correct)

Navigating ships at sea

Building skyscrapers

Growing crops

What happens when you drop a coin from the top of a ladder?

It floats in mid-air

It lands at the base of the ladder (correct)

It disappears into thin air

It lands on the roof of a nearby building

How did Aristotle and Galileo differ in their ideas about falling objects and the motion of the earth?

Aristotle concluded that the earth was stationary, while Galileo believed in the earth's motion. (correct)

Aristotle argued that objects would fall into the sea from a ship, while Galileo argued they would land on the ship.

Aristotle thought that falling objects would land far away, while Galileo believed they would land close by.

Aristotle believed objects fall straight down due to gravity, while Galileo believed they follow curved paths.

What is the significance of knowing about vectors in two-dimensional motion?

Determining the distance covered by fired objects and predicting their vertical motion Signup and view all the answers

Why did Aristotle use the example of dropping an object from a ship's mast to argue against the earth's motion?

To demonstrate that objects always fall into the sea from a moving ship Signup and view all the answers

How did Galileo explain why an object dropped from a ship's mast would land at the base of the mast?

By stating that objects participate in both vertical and horizontal motion Signup and view all the answers

What was the main difficulty that people faced when studying projectile motion?

Dealing with the concept of constant velocity and constant acceleration in the same object. Signup and view all the answers

What was the traditional belief regarding a projectile's motion in the sixteenth century?

The object had motion from the gunpowder explosion, then fell straight down due to natural motion. Signup and view all the answers

How did Galileo propose to explain the motion of a projectile?

The force of gunpowder was applied only at the instant of explosion, leading to constant velocity, then gravity caused acceleration. Signup and view all the answers

What term refers to the path followed by a projectile, as described in the text?

Parabola Signup and view all the answers

Why did people in history deny the simultaneous motions of a projectile?

They found it paradoxical to have constant velocity and acceleration in the same object. Signup and view all the answers

What was the key difference between the traditional belief and Galileo's hypothesis about projectile motion?

The cause of initial motion - gunpowder explosion versus force of gravity. Signup and view all the answers