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What is Motion:Law of motion:

Pak Tale
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Physics ( Motion) :1st of all we understand about some important things before studying motion

(1) Speed:

The rate of change of distance is called speed.









Four types of speed given below:

  • Average speed.
  • Instantaneous speed.
  • Variable speed.
  • Uniform speed.
We understand that The SI unit of speed is (ms-1):

(2) Velocity: 
The rate of change of speed is called velocity.

Four type of Velocity:
  • average velocity.
  •  instantaneous velocity.
  • uniform velocity.
  • average velocity.
As we know that SI unit of velocity is (m/s) same like the speed unit.
















(3) Acceleration:
The rate of change of velocity is called acceleration.

Positive Acceleration.
Negative Acceleration.
 Zero      Acceleration.

Unit of acceleration : is the metre per second per second (m/s2).

(4) Force:
When energy apply (push or pull to any object
is called force.
 unit of force is the (newton).
















Another four type of unit:

(Poundal,Dyne,Poundal-force,Gram-force,Kilogram-force.).

(5) Inertia:

When a tendency to do nothing any things And  to remain unchanged

Three  type of inertia:

  • Inertia of motion
  • Inertia in one direction.
  • Inertia at rest
Motion: 
When changing in any position by energy apply or force exert is called motion

TYPES OF LAW OF MOTION GIVEN BELOW:

Newton's laws of motion:

In 1687, Sir Isaac Newton established the relation between force and motion.

Newton's First Law motion:

Every object continuous state it,s state of rest or sate of uniform  motion until and unless an external unstable for acts on it.





















 
Newton second law states that:
 When force is applied on the body of mass "m", the acceleration "a" produced in a body is directly proportional to the applied force.

















Mathematically:

 F = ma equation 1
It shows the mathematical form of newton second law.

How we understand:

When we apply force with force F(by human or another things) and to M (anythings) object and displacement is created this process is called.
Newton's third law:
For every action there is an equal but opposite reaction.

























Action is a force exerted by first body on to secondary.
Reaction is a force exerted by the second on to the ist body.
Faction = -F reaction 

Types of motion:
  1. Translatory motion.
  2. Rotatory motion.
  3. vibration motion.

Translate motion:

When a object going in uniform form in the same direction we have  to be noted there is no change in the saturation in goin way this  process is called motion.
Example:
 Cat walking, man walking,  stone falling  straight toward the surface of the earth, The boat sailing in the sea,Bikeorbar  moving etc.
Types of Translatory:
(1)Linear Motion.
(2)Circular Motion.
(3) Random motion.

(a)Linear motion:
Those objects which move straight to distitanation point is called linear motion.

(b)Circular Motion:
Those objects which are move in circle is called Circular Motion.

(c)Random motion.
Those objects or small particle which are move in random motion is called Random motion.

(2) Rotatory motion:
When an object rotate about on its axis this process is called rotatory motion.

Example:
  • The motion of the earth about it is own axis around the  sun this process is called rotary motion.
  • When a fan move around about it own axis around the ceiling this process is called rotatory motion.
(3) vibration motion.
That motion which behave like to and fro its mean position is  called vibration motion

Example: The human breathe,their chest expands and contracts





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