A tetherball leans against the smooth, frictionless post to which it is attached. The string is attached to the ball such that a line along the string passes through the center of the ball. If the string is 1.40 m long and the ball has a radius of 0.110 m with mass 0.270 kg. a) Make a free-body diagram of the ball.
b) What is the tension in the rope?
c) What is the force the pole exerts on the ball?

their crystal patterns have been disrupted by stress

attach the statements so i can answer : )

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