One Dimensional Motion
Basic Concepts
Mechanics is a branch of science that studies the motion of objects and the reasons behind this motion. The part of mechanics that examines the motion of objects is called dynamics. Dynamics is divided into two main parts: kinematics and kinetics.
- Kinematics: It aims to create equations that describe the relationship between time and distance by ignoring the factors causing motion. In other words, it defines how an object moves without considering the forces acting on it.
- Kinetics: Alongside motion, it also examines the forces acting on an object and its mass to study the relationship between forces and motion. This section focuses on the causes of motion (forces) and how these forces affect the motion of an object.
What is One-Dimensional Motion?
One-dimensional motion refers to the motion of an object in only one direction (typically along a horizontal or vertical axis). In this type of motion, the object moves forward or backward along a coordinate axis. During this process, physical quantities such as the object’s position, time, velocity, and acceleration are studied.
Examples:
- A car moving along a straight road.
- The motion of a free-falling ball.
- A train moving on a straight track.
Fundamental Physical Quantities:
- Position (x): Describes the location of an object relative to its starting point. It is usually represented in a coordinate system.
- Time (t): Refers to the duration over which motion occurs.
- Velocity (v): The rate of change of position with respect to time. It indicates the distance an object travels in a unit of time.
- Acceleration (a): The rate of change of velocity with respect to time. It shows how much the velocity of an object changes within a specific time.
These basic concepts form the components of one-dimensional motion and help us understand an object’s motion comprehensively.
