A) -2i-3j
B) -2i+3j
C) 2i-3j
D) 2i+3j
ശരിയായ ഉത്തരം: C
ചിത്രത്തിൽ നിന്ന് കാണാം, X-ഘടകം മാറില്ല, എന്നാൽ Y-ഘടകം തിരിയുന്നു.
അങ്ങനെ, പോയിന്റ് B-ലെ വേഗത ആണ് $ ( \text{2i-3j} )\text{ ms}{{-}^{1}} $.
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