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the english physicist and mathematician sir isaac newton discovered three basic laws of motion. the first law says that objects at rest and objects in motion will remain at rest or in motion, unless they are acted upon by an “unbalanced force.” the second law says that when a force acts on a mass, acceleration is produced. the greater an objects mass, the more force is needed to accelerate it.
newtons laws of motion have become known throughout the world, including his third law of motion. it reads: “for every action, there is an equal and opposite reaction.” a simpler way of saying this might be: “when you push an object, it pushes back.” for every force, in other words, there is a reaction force equal in size.
there are many ways to describe how the third law of motion works in the world of sports. one of the more interesting examples is the way that lebron james dunks a basketball.
in order for lebron james to score a slam-dunk, he must
5 what is the main idea of this passage?
a lebron james and michael jordan are two of the best players in the history of professional basketball.
b basketball players must have high vertical leaps in order to dunk basketballs.
c newtons third law of motion is related to the first and second laws of motion.
d newtons third law of motion can be examined using the examples of basketball players jumping.
6 read the following paragraph from the passage:
“lebron james is a big man. he is 6 feet, 8 inches tall. he weighs 245 pounds. when he is standing upright, with his arms raised above his head, his
The passage first introduces Newton's three laws of motion, then focuses on connecting the Third Law to a sports example (LeBron James dunking a basketball). Option A and B only focus on basketball details unrelated to the core physics topic. Option C is incorrect as the passage does not center on linking the Third Law to the first two, but rather using a basketball example to explain the Third Law. Option D accurately captures the main idea of using basketball player jumps to examine Newton's Third Law.
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D. Newton’s Third Law of Motion can be examined using the examples of basketball players jumping.