Answer: 4. Spirit of Australia, a hydroplane boat, m. 0.75 hours (45 minutes). What is its record. 5. The fastest plane ever made, the. Based on this speed, how far could it travel in a. 2 hours? ... 0.5 hours (30 minutes) to travel 380 miles, what is its speed? on ... Use the speeds you calculated in miles per hour on the front of.
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