College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

تمرين 100

For each of the given vectors, give a vector that, when added to it, yields a null vector (a vector with a magnitude of zero). Express the vector in the form other than that in which it is given (component or magnitude-angle): (a)
= 4.5 cm, 40° above the + x -axis; (b)
; (c)
= 8.0 cm at an angle of 60° above the x -axis.