7) Consider a 300 km car race on a 5-km track. Car A finishes the race in 4 h and is 1.5 laps ahead of B at this time. What is B's time for the race?
7) Consider a 300 km car race on a 5-km track. Car A finishes the race in 4 h and is 1.5 laps ahead of B at this time. What is B's time for the race?
College Physics
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Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
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
Transcribed Image Text:7) Consider a 300 km car race on a 5-km track. Car A finishes the race in 4 h and is 1.5 laps
ahead of B at this time. What is B's time for the race?
8) On its maiden voyage in July 1952, the liner United States won the coveted Blue Ribbon for
the fastest crossing of the Atlantic from New York to Cornwall, U.K. The trip took 3 days 10
hours 40 min at an average speed of 34.5 knots (65.5 km/h). This was 10 h 2 min less than the
14-year-old record held by the Queen Mary. What was the average speed of the Queen Mary?
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