difference between translatory and rectilinear motion.

Question

epoweritheta · Answer

good question , 
translatory motion is motion in which all points of a moving body move uniformly in the same line or direction . like a ball displaced without rolling 

rectilinear motion is usually referred to a point like object , ie object where we consider only the centre of mass , where the COM moves in a straight line .eg : when a stick is spinned through the COM ,but COM moves along a straight line .

however i am not sure about this, i think this is the difference

anonymous · Answer

in both the cases point obj. is considered?

epoweritheta · Answer

no any object can be taken but for translatory motion every point of the object must travel in a straight line 
but in a rectilinear motion , it is enough that the COM moves in a straight line , we usually talk about rectilinear motion when we are not worried about the rotations of the object

anonymous · Answer

ohk i understood thanks a lot!!!

epoweritheta · Answer

but have a second opinion with your tutor and tell me if i am wrong

anonymous · Answer

ohk but thanks...:
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epoweritheta · Answer

: )