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# A particle is moving

Question:

A particle is moving with velocity $\vec{v}=K(y \hat{i}+x \hat{j})$, where $K$ is a constant. The general equation for its path is :

1. $\mathrm{y}^{2}=\mathrm{x}^{2}+$ constant

2. $y=x^{2}+$ constant

3. $\mathrm{y}^{2}=\mathrm{x}+\mathrm{constant}$

4. $x y=$ constant

Correct Option: 1

Solution: