Question

The position vector of a moving particle at t seconds is given by r = 3î +4t²j – t³k. Its displacement during an interval of 1s to 3s is 1) j- 2) 3î +4j- 3) 9î +36) – 27l 4) 32 j - 26
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Answer 1

Answer:

$2. | |.03.03 \times \frac{?}{?} | |$