a cylinder of mass 50kg and radius 0.2m has moment of inertia of 1.0kgm² about its axes. what is the kinetic energy when rolling horizantally at 2m/s.? solution?

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

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