A projectile fired at 30^(°) to the ground is observed to be at same height at time 3 ~s and 5 ~s after projection, during its flight. The speed of projection of the projectile is _ _ _ _ _ m ~s⁻¹. (Given g=10 ~ms⁻²)

Kinematics: JEE Main 2023 Physics question

JEE Main 2023 · 11 Apr, Morning shift · Q68

JEE Main 202311 Apr, Morning shiftPhysicsMediumKinematics177× since 2002

A projectile fired at

30^{\circ}

to the ground is observed to be at same height at time

3 \mathrm{~s}

and

5 \mathrm{~s}

after projection, during its flight. The speed of projection of the projectile is ___________

\mathrm{m} ~\mathrm{s}^{-1}

. (Given

g=10 \mathrm{~ms}^{-2}

)

Your answerType your answer. Integers and decimals are accepted.

JEE Main 2023 Kinematics Question with Answer (11 Apr Morning shift, Q68) | JEE Arc