A) -2i-3j
B) -2i+3j
C) 2i-3j
D) 2i+3j
சரியான பதில்: C
படத்திலிருந்து X-சார்பு மாறாது, ஆனால் Y-சார்பு தலைகீழாகும்.
அப்படி வேகம் B-இல் என்ன என்பதை கணக்கிடுவோம்.
புள்ளி B-இல் வேகம் $ ( \text{2i-3j} )\text{ ms}{{-}^{1}} $.
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