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Questions and Answers
What was a common misconception about projectile motion in the sixteenth century?
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?
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?
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?
What did people believe about the motion of projectiles before Galileo's hypothesis?
Why was it difficult for people to understand projectile motion in the sixteenth century?
Why was it difficult for people to understand projectile motion in the sixteenth century?
What type of path does a projectile follow according to the text?
What type of path does a projectile follow according to the text?
What is the reason that objects moving through space follow curved parabolic paths?
What is the reason that objects moving through space follow curved parabolic paths?
In ancient times, why did artillery and bombs need to be aimed with the ultimate path of the object in mind?
In ancient times, why did artillery and bombs need to be aimed with the ultimate path of the object in mind?
What is one of the uses of the knowledge gained from studying two-dimensional motion mentioned in the text?
What is one of the uses of the knowledge gained from studying two-dimensional motion mentioned in the text?
Why did Aristotle use the falling object scenario as evidence that the earth did not move?
Why did Aristotle use the falling object scenario as evidence that the earth did not move?
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?
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?
Why did Aristotle think that objects dropped from a moving ship would fall behind?
Why did Aristotle think that objects dropped from a moving ship would fall behind?
