What dose it mean to say that a force is a vector?

A force is a vector quantity. As learned in an earlier unit, a vector quantity is a quantity that has both magnitude and direction. ... Because a force is a vector that has a direction, it is common to represent forces using diagrams in which a force is represented by an arrow.

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27