The displacement of a particle from a point having position vector $2 \hat{i}+4 \hat{j}$ to another point having position vector $5 \hat{i}+1 \hat{j}$ is ........ units
The displacement of a particle from a point having position vector $2 \hat{i}+4 \hat{j}$ to another point having position vector $5 \hat{i}+1 \hat{j}$ is ........ units
- A
$3$
- B
$3 \sqrt{2}$
- C
$5$
- D
$5 \sqrt{3}$
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- [KVPY 2011]
The equation of a projectile is $y=a x-b x^2$. Its horizontal range is ......
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