Physics

Kinematic Equations of Motion

For objects in uniformly accelerated rectilinear motion, the five quantities, displacement x, the time took t, initial velocity v0, final velocity v and acceleration...

Acceleration

The time rate of change of velocity is called acceleration. Its unit is m/s2. Its dimensional formula is . It is a vector quantity. Acceleration can...

Velocity

The rate of change of displacement of an object in a particular direction is called its velocity. Its unit is m/s. Its dimensional formula is...

Speed

The time rate of change of position of the object in any direction is called the speed of the object. Its unit is m/s. It...

Motion

"An object is said to be in motion if its position changes with time". The concept of motion is a re’ live one and a...

Dimensions of Physical Quantities

The nature of physical quantities is described by its dimensions. All the physical quantities represented by derived units can be expressed in terms of...

Significant Figures

Significant Figures: As discussed above, every measurement involves errors. Thus, the result of measurement should be reported in a way that indicates the precision...

Combination of Errors

The combination of Errors: Error of A Sum or A Difference Error of A Product or A Quotient ...

Absolute, Relative, and Percentage Error

Arithmetic Mean or Average Value: Let the value obtained in n measurements are a1, a2, a3...., an. Then, the Arithmetic Mean or Average Value of...

Accuracy, Precision and Errors

Error: The result of every measurement by any measuring instrument contains some uncertainty. This uncertainty is called error. Every calculated quantity which is based on...