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A car travelled 60 km east in 1.33 h along a straight line, then returned back west for 40 km in 0.67 h. Its average velocity
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15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?
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Who was the first scientist to measure speed as distance over time?
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A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n
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A car travelled 60 km east in 1.33 h along a straight line, then returned back west for 40 km in 0.6...
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