Philip+Webster

//14.Can three or more vectors with unequal magnitudes be added up together so their sum is zero? If so, show by means of a tail-to-head arrangement of the vectors how could this occur?// They can they just need to add up, they would form a triangle.

//15.Vetcors A and B satify the vector equation A+B=0 a) How does the magnitude of B compare with the magnitude A b) How does the direction of B compare with the direction of A//

a) they are equal b) they are pooposites

//30.At a panic, there is a contest in white hoses are used to shoot water at a beach ball from three directions. As a result, three forces act on the ball, F1, F2 and F3. The magnitude of F1 and F2 are F1 = 50.0 newtons and F2 = 90.0 newtons. Using a scale drawing and the graphical technique, determine (a) the magnitude of F3 and (b) the angle $ such that the resultant force acting on the ball is zero.

43. A football player runs the pattern given in the drawing by the three displacements vectors A, B, and C. The magnitudes of these vectors are A=5.00m, and C=18.0m. Using the component method, find the magnitude and direction ) of the resultant vector A+B+C.//