A bird flies from (-3 m, 4 m, -3 m) to (7 m, -2 m, -3 m) in the xyz-coordinates. The bird's displacement vector is given by

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Solution

Q.
A bird flies from (-3 m, 4 m, -3 m) to (7 m, -2 m, -3 m) in the xyz-coordinates. The bird's displacement vector is given by

1 $(4 \hat{i} + 2 \hat{j} - 6 \hat{k})$

2 $(10 \hat{i} - 6 \hat{j})$

3 $(4 \hat{i} - 2 \hat{j})$

4 $(10 \hat{i} + 6 \hat{j} - 6 \hat{k})$

Ans.
(2)

$Bird's displacement is Δ \vec{r} = {\vec{r}}_{2} - {\vec{r}}_{1}$

$∴$ $Δ \vec{r} = (7 \hat{i} - 2 \hat{j} - 3 \hat{k}) - (- 3 \hat{i} + 4 \hat{j} - 3 \hat{k}) = 10 \hat{i} - 6 \hat{j}$

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