Study Guide for Uniform and Non-Uniform Motion and Speed

Definition of Uniform Motion: An object is considered to be in uniform motion if it travels along a strictly straight line and traverses equal distances within equal intervals of time.
Specific Example: Consider a car traveling along a straight road. If that car covers a distance of $10\,m$ in the first $15\,s$ , another $10\,m$ in the second $15\,s$ , another $10\,m$ in the third $15\,s$ , and continues this pattern indefinitely, its motion is classified as uniform.

Definition of Non-Uniform Motion: The motion of an object is classified as non-uniform if the object covers unequal distances within equal intervals of time.
Examples of Non-Uniform Motion: * A car navigating through a busy road, where traffic and obstacles prevent a constant rate of travel. * A stone that is dropped from the top of a building, where the acceleration due to gravity causes the distance covered in each interval to change.

Definition of Speed: Speed is formally defined as the distance traveled by a body per unit interval of time.
Mathematical Formula for Speed: $\text{SPEED} = \frac{\text{DISTANCE}}{\text{TIME}}$
Physical Quantity Type: Speed is categorized as a scalar quantity, meaning it has magnitude but no specific direction.
Standard SI Units: The International System of Units (SI) measure for speed is the meter per second, denoted as $\text{m/s}$ or $\text{ms}^{-1}$ .

Uniform or Constant Speed: * Definition: If a moving body covers equal distances in equal intervals of time, the speed of that body is said to be uniform. * Practical Example: A car driving on a road where the speedometer consistently displays the exact same speed throughout the entirety of the trip.
Non-Uniform or Variable Speed: * Definition: If a moving body covers unequal distances within equal intervals of time, the speed is classified as non-uniform or variable. * Practical Example: A person riding a bicycle through a crowded or congested road, where they must constantly speed up or slow down.