Question

The vector A has x, y, and z components of 8.00, 12.0,
and 4.00 units, respectively. (a) Write a vector expression
for A in unit–vector notation. (b) Obtain a
unit–vector expression for a vector B one-fourth the
length of A pointing in the same direction as A. (c) Obtain
a unit–vector expression for a vector C three times
the length of A pointing in the direction opposite the
direction of A.