Supersonic

The video explains that the speed of sound in air at sea level is about 1236 km/h. Any speed faster than this is considered supersonic. Supersonic aircraft, while capable of flying at these speeds, are less efficient and more complex to operate than subsonic planes, and are primarily used in military applications.

What is the speed of sound in air at sea level?

• 1500 kilometers per hour

• 2000 kilometers per hour

• 1236 kilometers per hour

• 1000 kilometers per hour

What term is used to describe speeds faster than the speed of sound?

• Subsonic

• Hypersonic

• Supersonic

• Transonic

Which of the following is a characteristic of supersonic aircraft?

• More efficient than subsonic planes

• Simpler to operate than subsonic planes

• Less efficient and more complex than subsonic planes

• Used primarily for commercial flights

Why are supersonic aircraft primarily used in military applications?

• They are cheaper to operate

• They are less complex

• They are more efficient

• They are difficult to operate and less efficient

Which of the following is NOT a reason why supersonic aircraft are less common in civilian use?

• They are less efficient

• They are more complex

• They are primarily used in military applications

• They are easier to operate