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MOTION IN 1D

 MOTION IN 1D

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Difference between distance and displacement 

Distance Displacement

❖ Total length of path
covered by a body
❖ Scalar quantity
❖ DIstance travelled is non-
zero, even for a closed path 

Displacement 

❖ Shortest distance between
initial & final positions

❖ Vector quantity
❖ For a closed path,
displacement is zero 

Average Speed 

The ratio of distance covered by a particle and time is called Average speed 

Instantaneous Speed
 
The instantaneous speed of an object is the speed of the object at a particular moment (instant) of time
Average velocity
 
It is the ratio of total displacement to the total time taken




Instantaneous Acceleration

 
It is defined as ratio of the change in velocity to the time interval

 

Acceleration of object is constant i.e. a = constant Equations are to be applied vectorially  

a.Use directions 

b.We can only get displacement 


 

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