Chapter 1: Units, Physical Quantities, and Vectors

Four steps of problem solving strategy

Four steps of problem solving strategy

Identify, Setup, Execute, Evaluate

Unit of distance and unit of time

meter, second

model

It is a simplified version of a physical system that would be too complicated to analyze in full detail.

unit vector

A(n) ________ has a magnitude of 1, with no units.

Displacement

________ is simply a change in the position of an object.

scalar quantity.

When a physical quantity is described by a single number, it is a scalar quantity.

vector quantity

has both a magnitude and a direction in space.

negative vector

A vector with the same magnitude but in the opposite direction is known as a negative vector

antiparallel vector

When two vectors and have opposite directions, whether their magnitudes are the same or not, we say that they are antiparallel.