The newton is a derived unit, because it is defined as the force required to accelerate 1kg at 1 ms -2 .
Scalar quantities have only a magnitude.
Vector quantities are those such as displacement, velocity, acceleration. The first vector is drawn, then the second from the end of the first, and so on. When you have a straight line which goes through the origin, the unit on the vertical axis is directly proportional to that on the horizontal axis. If c is not zero, then they are not directly proportional. Period is the time required to complete one cycle ex.