Unit Test — Unit test Answers

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Which object would be considered to be in free fall?

one that experiences both friction and centripetal force

one that is truly weightless

one that is slowed down by air resistance

one with only gravity acting upon it

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Projectile motion is a combination of which two types of motion?

parabolic and curved

straight and diagonal

horizontal and vertical

constant and linear

Juan and Kuri are on a carousel. Juan is closer to the center of the carousel than Kuri. Which statement describes their tangential speeds?

Juan and Kuri move the same distance in one revolution, but Juan completes the revolution in less time and has a higher speed.

Juan and Kuri complete one revolution in the same time, but Juan travels a shorter distance and has a lower speed.

Juan moves a shorter distance in less time than Kuri, but their speeds are the same.

Juan and Kuri complete one revolution in the same time, so they have the same speed.

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