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### 5 Cards in this Set

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 A car travels at 40 km/h for 30" and 60 km/h for 15". How far does it travel in this time. A) 45km B) 37.5 km C) 20 km D) 35 km E) 28.4 km D Which of these base units is currently not defined by constants of nature? A) length B) current C) mass D) time C Six pounds on Earth has what weight on the moon. A) 1 kg B) 6 lb C) 36 lb D) 1 lb E) 1/6 lb D How many minutes would it take light, traveling at a apeed of 186,000 mi/s, to reach us from the sun? The Sun is 93 million mi from earth. 8.3 minutes Why is Mass considered a more basic property than weight? A mass may have weight but the weight is a property which changes as the mass is moved around in the universe. Mass is not a property which depends upon position.