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Q. |
Supersonic plane fly with the speed - |
A. | less than the speed of sound |
B. | of sound |
C. | greater than the speed of sound |
D. | of light |
Answer» C. greater than the speed of sound | |
Explanation: Supersonic travel is a rate of travel of an object that exceeds the speed of sound (Mach 1). For objects traveling in dry air of a temperature of 20 °C (68 °F) at sea level, this speed is approximately 344 m/s, 1,125 ft/s, 768 mph, 667 knots, or 1,235 km/h. |
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