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A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?
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Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.
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What is the measurement of how fast an object moves relative to a reference point?
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Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)
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A 0.17-kg baseball is thrown with a speed of 38 m/s and it is hit straight back toward the pitcher w...
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