Acceleration And Retardation - Physics
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14-08-2018    2154 times
Acceleration Retardation

Acceleration

If any rigid body with un-uniform speed increases its velocity continuously then the rate of the increasing speed is known as acceleration of the body.  That is, increasing of the velocity in respect of time is known as acceleration.

Acceleration
Acceleration

Def. The rate of change of velocity of a body with respect to time is called its Acceleration.

Let,

Initial velocity of the body= u

Final velocity of the body= v

Time interval = t

Acceleration of the body = a

Acceleration

Unit of Acceleration

MKS o SI method : metre / second2

CGS Method : centimeter / second2 

FKS Method : foot / second2 

Problems:

A car is travelling at 54 km / h. If its velocity increases to 72 km / h in 5 second, then find the acceleration of the car in SI unit.

We know, metre / second2 are the unit of acceleration in SI unit.

Acceleration

Retardation

If any rigid body with un-uniform speed decreases its velocity continuously then the rate of the decreasing speed is known as acceleration of the body. That is, decreasing of the velocity in respect of time is known as Retardation.

Retardation
Retardation

Def. The rate of change of velocity of a body with respect to time is called its Retardation.

Private Teacher

Let,

Initial velocity of the body= u

Final velocity of the body= v

Time interval = t

Retardation of the body = a

Retardation

Unit of Retardation

MKS o SI method : metre / second2

CGS Method : centimeter / second2 

FKS Method : foot / second2 

Problems:

A car is travelling at 72 km / h. If its velocity increases to 54 km / h in 5 second, then find the Retardation of the car in SI unit.

We know, metre / second2 are the unit of Retardation in SI unit.

Retardation
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