OG详解-OG7 数学2 Q26

Choice B is correct. It’s given that the speed of a vehicle is increasing at a rate of 7.3 meters per second squared. It’s given to use 1 mile = 1,609 meters. There are 60 seconds in 1 minute; therefore, 602 or 3,600 seconds squared is equal to 1 minute squared. It follows that the rate of 7.3 meters per second squared is equivalent to(7.3 meters1 second squared​​ ) (1 mile1,609 meters​​ )(3,600 seconds squared1 minute squared​​ ) or approximately 16.33 miles per minute squared. The rate, in miles per minute squared, rounded to the nearest tenth is 16.3.
Choice A is incorrect and may result from conceptual or calculation errors. Choice C is incorrect and may result from conceptual or calculation errors. Choice D is incorrect and may result from conceptual or calculation errors.