A projectile is given an initial velocity of $(\hat i+2\hat j)\,m/ s$ where $\hat i$ is along the ground and $\hat j$ is along the vertical. If $g = 10\,m/s^2,$ the equation of its trajectory is

  • A

    $y = x -5x^2$

  • B

    $y =2 x -5x^2$

  • C

    $4y = 2x -5x^2$

  • D

    $4y = 2x -25x^2$

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