No i think your question is wrong
this is not a answer
and my question is not wrong
If any body is in motion that means it speed will not be zero. And the condition that you are giving can't be occur in a straight be cause if speed is zero then velocity will also be zero. There is a condition that's velocity can be zero whereas Speed is non-zero when the object will return back to its initial position.
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Force your teacher and ask them to give the information about that question. If they tell you the answer then Please tell me also.
i am still enjoying my holidays and i cannot contact with my teachers
Okay! Whenever you meet your teacher. Although, Will you be my friend?
but can i ask that in which school do you study and in which class you study in