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What is the difference between deaccelerated motion and retarded motion,are they same or have a slight difference(as I know).Pls clarify this doubt

What is the difference between deaccelerated motion and retarded motion,are they same or have a slight difference(as I know).Pls clarify this doubt

Grade:11

1 Answers

Arun
25750 Points
5 years ago
Retardation- decrease in velocity 
Deacceleration- decrease in speed.

Basically, they mean the same thing. 

I believe that deceleration is the preferred scientific term when discussing a velocity change, but it is really a matter of choice.

 suppose if you are discussing the thing causing the velocity decrease, "retardation" is "better", and when discussing the object which is loosing speed, "deceleration" is "better"
example... 

The damper retarded the motion of the fly wheel causing the fly wheel to decelerate.

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