An object is in circular motion how will the object behave if the centipetal force is removed

Explanation:

When a body is in circular motion, the centripetal force acts towards the center of the curvature of the path. It is required to keep the object in circular motion. The velocity acts in the tangential direction to the curvature and when the centripetal force is removed it threads that path

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

not too sure thinking all accelerations are pointed down