Multiple choice question VI — task. Science CBSE, Class 9.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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1. Displacement is a __________

vector quantity
scalar quantity
either vector quantity or scalar quantity
neither vector quantity nor scalar quantity

2. Which of the statements are wrong?

if velocity of a body changes, it must have some acceleration
if speed of a body changes, it must have some acceleration
if body has acceleration, its speed must change
if body has acceleration, its speed may change

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