As the angle between two forces is changed from 10° to 70°, the magnitude of the resultant produced by the two forces is: (1) increased
(2) decreased
(3) the same

a displacement distance is size of displ

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

you can cut your hand off if your not