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12 Questions

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Projectile Motion Investigation

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Questions and Answers

What was a common misconception about projectile motion in the sixteenth century?

Objects fired from cannons had two distinct motions - one from gunpowder and one due to gravity. (correct)

Objects fired from cannons followed a straight path until the gunpowder's effect was gone.

The force of gravity would not affect objects fired from cannons.

Galileo's hypothesis about projectile motion was widely accepted.

Why did some people find the idea of projectile motion paradoxical?

Because an object has both constant velocity and constant acceleration at the same time. (correct)

Because projectile motion was only observed in the sixteenth century.

Because the force of gravity did not affect projectiles.

Because projectiles fired from cannons moved in a straight line.

What did Galileo propose about the motion of projectiles?

The force of gravity did not affect the motion of projectiles.

The force of gunpowder applied only at the instant of explosion, resulting in a constant velocity. (correct)

Projectile motion followed a straight path until gravity took over.

The motion of projectiles followed a circular path.

What did people believe about the motion of projectiles before Galileo's hypothesis?

They believed projectiles followed a straight path until natural motion took over. Signup and view all the answers

Why was it difficult for people to understand projectile motion in the sixteenth century?

Because they struggled with the idea of an object having two simultaneous independent motions. Signup and view all the answers

What type of path does a projectile follow according to the text?

A parabolic path Signup and view all the answers

What is the reason that objects moving through space follow curved parabolic paths?

Constant vertical acceleration Signup and view all the answers

In ancient times, why did artillery and bombs need to be aimed with the ultimate path of the object in mind?

To account for the curved parabolic paths of objects in motion Signup and view all the answers

What is one of the uses of the knowledge gained from studying two-dimensional motion mentioned in the text?

Determining projectile landing points Signup and view all the answers

Why did Aristotle use the falling object scenario as evidence that the earth did not move?

He thought the earth's motion would cause objects to fall behind. Signup and view all the answers

According to Galileo's argument, why would an object dropped from the top of a ship's mast land at the base of the mast?

Because the object participates in the horizontal motion of the ship and earth Signup and view all the answers

Why did Aristotle think that objects dropped from a moving ship would fall behind?

He assumed the ship's motion would affect their trajectory. Signup and view all the answers