Definition Acceleration of an object is defined as the time rate of change of velocity of an object. Introduction We often see that the velocity of a vehicle moving on road is never uniform. Its a velocity that changes randomly. Such a motion is called an accelerated motion. Thus, acceleration is the change in velocity […]

Basic forces in nature are the forces governing macroscopic as well as microscopic world. These are gravitation forces, weak forces, electromagnetic forces and nuclear forces.
In daily life, we come across many kinds of forces like friction forces, electrostatic forces, magnetic forces, viscous forces etc. These forces are observed to be acting between macroscopic objects. For instance, while walking on rough horizontal surface, the frictional forces....

A collision is an isolated event in which two or more colliding bodies exert relatively strong forces on each other for a relatively short time ....

The complex number z in geometrical form is written as z = x + iy.In geometrical representation complex number z is represented by a point P(x, y) on the complex plane or the argand plane where OA =x is x-intecept and AP=y is y-intercept.

In polar representation a complex number z is represented by two parameters ‘r’ and ‘θ’. Parameter ‘r’ is the modulus of complex number and parameter ‘θ’ is the angle which the line OP makes with the positive direction of x-axis. It is also called argument of complex number and is denoted by arg(z).Finding the value of these two parameters from parameters x and y will help us convert the complex number to polar form.