Daily Quiz
What is the definition of hypersonic speed?

(a) Speed greater than the speed of sound(b) Speed greater than Mach 5(c) Speed greater than Mach 10(d) Speed greater than Mach 20Ans.(b)Sol. Hypersonic speed is defined as a speed greater than Mach 5, where Mach 1 represents the speed of sound. Mach 5 corresponds to approximately 3,836 miles per ...

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