At sea level it needs to travel at 340m/s.
Some rocket planes can go as fast as six times the speed of sound. Most military fighter planes do not go faster than twice the speed of sound, and the typical civilian passenger/transport plane goes slower than the sound barrier.
He broke the sound barrier October 14, 1947.
Only jet fighter planes break sound barrier now.
To break the sound barrier in the Earth's atmosphere, an object must travel at a speed of around 767 mph (1,235 km/h) at sea level. This speed is known as the speed of sound, or Mach 1.
Of course. As his name suggests Sonic moves very fast, faster than the speed of sound and is able to break the sound barrier.
It's around 1,125 FPS, BUT you really don't want to break the Sound Barrier. See the link below.
He has to travel at more than 760mph.
The Spitfire could reach 606 mph .
The sound barrier to my knowledge, would be the buildup of energy as a plane or vehicle approaches the Speed of sound. It is also visible when something breaks the sound barrier. Check it out on youtube. It looks like a cloud. So in a way, anyway, it is a barrier, because it is harder to push through than if you were going 200mph.
About 340m/s at sea level
sonic boom as the planes speed exceeds the sound barrier.
Until the rota blades reach the speed of sound.