Iline 1
magnitude
A barge is pulled by two tugboats
shown in the following figure. One tugboat
4,000 units of force at 15° above the
AB (see the figure and the other
tugboat pulls as the barge with a
force of magnitude 5,000 units of force .
at 12° below the line AB. Thesolve the pulling
forces to their scalar components
and find the components of the
resultant force pulling on the barge e
What is the magnitude of the resultant
pull? What is the direction relative to the
line AB?

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