To find the vector equal to one-half times vector v, we need to divide the components of vector v by 2.
Given:
Vector v: right and down 4 units
To find one-half times vector v, we divide each component by 2:
One-half times vector v: right and down 2 units
Therefore, the vector equal to one-half times vector v is a vector pointing to the right and down 2 units.