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What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds
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Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue
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How does an observation about an object differ from an inference about that object
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3. which is not a primary color of light? blue red green yellow
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How many neutrons does element x have if it's atomic number is 23 and its mass number is 70...
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