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Q.

The velocity vector of the motion described by the position vector of a particle r=2ti^+t2j^ is given by

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a

v = 2i^+2tj^

b

v = 2t i^+2t j^

c

v = t i^+t2 j^

d

v = 2 i^+t2 j^

answer is A.

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Detailed Solution

Given,  r=2ti^+t2j^Velocity vector,  v=drdt and using ddxxn=nxn-1We have,  v=drdt =2i⏞ + 2tj⏞
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