Motion
If any object change our position with respect to the time or its surrounding.
Motion is a activity or process, In this object move from one place to another.
E.g: running, jumping, cycling.
Key Concepts to understand :
Origin/Reference Point : reference point is a with respect to find the position of an object.
A point used to find or describe the location of something.
A reference point is always be in rest position.
Reference Frame : A coordinate system used to describe the position and motion of objects.
State of Motion / rest based on Reference point.
An object is at rest if its position does not change with respect to a reference point.
Motion – If any object change our position with respect to Reference point.
Note:- every object in this universe is in motion.
Types of Motion
1. Translational Motion
Rectilinear Motion(→)
Curvilinear Motion (●→)
2. Rotational Motion (fan)
3. Oscillator Motion
Physical Quantity : A quantity to which we measure and analysis.
Two types of Physical Quantity are
1. Vector quantity : There physical quantity have both magnitude & direction.
E.g:- force, momentum, velocity, displacement, etc.
2. Scalar quantity:- these physical quantity in which only on magnitude mean who have only
magnitude.
E.g:- distance, work, energy, etc.
Distance :-
This is the total length of path which is covered by body while moving from initial to final
position.
, It is a scalar quantity.
It can’t be Negative.
It can’t be zero.
It’s total length of path
If an object moves and then returns to its starting point, the distance covered is not zero.
Displacement-This is the shortest distance covered by body b/w its initial & final position.
Minimum length of path.
It's a vector quantity.
It can be positive & Negative both.
It's a shortest distance b/w two points.
It can be zero when the final position of object coincides with its initial position.
1. Note: ●Displacement < Distance
●Displacement > Distance [not possible]
2. Note: Both distance and displacement have a same unit = Meter (S.I.), cm (C.G.S.), km.
3. Note: Displacement can be negative when distance is related to graph.
4. Note: Distance = Displacement
Both are equal to each other when path is straight.
Types of Motion.
There are two types of Motion.
Uniform Motion:- An object covered equal distance with equal time.
Time and Distance = Constant.
Time ∝ distance.
D= S , T =S × D
T
Non-Uniform Motion:- An object covers unequal distance with time.
Time or distance non constant.
Speed
An object travelled distance per unit time.
travelled distance s
Formula:- speed= time
∨V =
t
S.I. unit of speed is m/sec.
Speed is a scalar quantity.
Distance change with respect to time.
Speed can be positive or zero but not be negative.
Speed = 0 when an object doesn't move.
If any object change our position with respect to the time or its surrounding.
Motion is a activity or process, In this object move from one place to another.
E.g: running, jumping, cycling.
Key Concepts to understand :
Origin/Reference Point : reference point is a with respect to find the position of an object.
A point used to find or describe the location of something.
A reference point is always be in rest position.
Reference Frame : A coordinate system used to describe the position and motion of objects.
State of Motion / rest based on Reference point.
An object is at rest if its position does not change with respect to a reference point.
Motion – If any object change our position with respect to Reference point.
Note:- every object in this universe is in motion.
Types of Motion
1. Translational Motion
Rectilinear Motion(→)
Curvilinear Motion (●→)
2. Rotational Motion (fan)
3. Oscillator Motion
Physical Quantity : A quantity to which we measure and analysis.
Two types of Physical Quantity are
1. Vector quantity : There physical quantity have both magnitude & direction.
E.g:- force, momentum, velocity, displacement, etc.
2. Scalar quantity:- these physical quantity in which only on magnitude mean who have only
magnitude.
E.g:- distance, work, energy, etc.
Distance :-
This is the total length of path which is covered by body while moving from initial to final
position.
, It is a scalar quantity.
It can’t be Negative.
It can’t be zero.
It’s total length of path
If an object moves and then returns to its starting point, the distance covered is not zero.
Displacement-This is the shortest distance covered by body b/w its initial & final position.
Minimum length of path.
It's a vector quantity.
It can be positive & Negative both.
It's a shortest distance b/w two points.
It can be zero when the final position of object coincides with its initial position.
1. Note: ●Displacement < Distance
●Displacement > Distance [not possible]
2. Note: Both distance and displacement have a same unit = Meter (S.I.), cm (C.G.S.), km.
3. Note: Displacement can be negative when distance is related to graph.
4. Note: Distance = Displacement
Both are equal to each other when path is straight.
Types of Motion.
There are two types of Motion.
Uniform Motion:- An object covered equal distance with equal time.
Time and Distance = Constant.
Time ∝ distance.
D= S , T =S × D
T
Non-Uniform Motion:- An object covers unequal distance with time.
Time or distance non constant.
Speed
An object travelled distance per unit time.
travelled distance s
Formula:- speed= time
∨V =
t
S.I. unit of speed is m/sec.
Speed is a scalar quantity.
Distance change with respect to time.
Speed can be positive or zero but not be negative.
Speed = 0 when an object doesn't move.
