Relation between initial velocity, final velocity and acceleration

Let us derive the relation between the initial velocity, final velocity and acceleration.

Suppose a body has an initial velocity u and is moving with uniform acceleration a.

Let the final velocity of the body after time t = v.

a = dv/dt

Or                                                              dv = adt                                               …(i) Continue reading “Relation between initial velocity, final velocity and acceleration”

Acceleration, average Acceleration, uniform Acceleration, variable Acceleration, instantaneous Acceleration

Acceleration: The state of change of velocity of a body with time is known as its acceleration.

If the velocity of a body increases with time, then its acceleration is positive. On the other hand, if the velocity of a body decreases with time, then its acceleration is negative. Negative acceleration is also called retardation or deceleration. Acceleration is a vector quantity.

Units of acceleration. The units of acceleration are: Continue reading “Acceleration, average Acceleration, uniform Acceleration, variable Acceleration, instantaneous Acceleration”

Velocity, average velocity, uniform velocity, variable velocity, instantaneous velocity

Let us discuss the definitions of velocity, uniform velocity, average velocity, variable velocity and instantaneous velocity

Velocity: The time rate of change of position of a body in a particular direction is known as its velocity.

Or

The time rate of change of displacement of a body is known as its velocity.

i.e.                                            Velocity = displacement/time Continue reading “Velocity, average velocity, uniform velocity, variable velocity, instantaneous velocity”