MCQEasyJEE Main 2023 · 11 April, Shift 1Projectile Motion

Physics Question from JEE Main 2023 · 11 April, Shift 1

A projectile fired at 30∘30^{\circ} to the ground is observed to be at the same height at time 3 s3 \, \text{s} and 5 s5 \, \text{s} after projection, during its flight. The speed of projection of the projectile is _____ ms−1\text{ms}^{-1}.

(Given g=10 ms−2g = 10 \, \text{ms}^{-2})

  • A

    70 ms−170 \, \text{ms}^{-1}

  • B

    75 ms−175 \, \text{ms}^{-1}

  • C

    80 ms−180 \, \text{ms}^{-1}

  • D

    85 ms−185 \, \text{ms}^{-1}

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