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From a building two balls A and B are thrown such that A is thrown upwards A and B downwards (both vertically). If vA and vB are their respective velocities on reaching the ground, then

their velocities depend on their masses

Kinematics

JEE Main level, single correct, medium

80 of 308

Question 80 of 308

From a building two balls $\mathrm{A}$ and $\mathrm{B}$ are thrown such that $\mathrm{A}$ is thrown upwards $\mathrm{A}$ and $\mathrm{B}$ downwards (both vertically). If $\mathrm{v}_{\mathrm{A}}$ and $\mathrm{v}_{\mathrm{B}}$ are their respective velocities on reaching the ground, then

Show answer and solution

Answer: (B) $\mathrm{V}_{\mathrm{A}}=\mathrm{V}_{\mathrm{B}}$

As the ball moves down from height '

h

' to ground the P.E at height '

h

' is converted to K.E. at the ground (Applying Law of conservation of Energy)
Hence,

\frac{1}{2} m_A v_A^2=m_A g h_A

v_A=\sqrt{2 g h_A}

; Similarly,

v_B=\sqrt{2 g h}

v_A=v_B

JEE Main question paper PDF

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JEE Main 2025 Apr 2 Shift 1 question paper

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JEE Main Physics practice question on Kinematics (Uniform Motion), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.

From a building two balls A\mathrm{A}A and B\mathrm{B}B are thrown such that A\mathrm{A}A is thrown upwards A\mathrm{A}A and B\mathrm{B}B downwards (both vertically). If vA\mathrm{v}_{\mathrm{A}}vA​ and vB\mathrm{v}_{\mathrm{B}}vB​ are their respective velocities on reaching the ground, then

JEE Main question paper PDF

More Physics practice

From a building two balls $\mathrm{A}$ and $\mathrm{B}$ are thrown such that $\mathrm{A}$ is thrown upwards $\mathrm{A}$ and $\mathrm{B}$ downwards (both vertically). If $\mathrm{v}_{\mathrm{A}}$ and $\mathrm{v}_{\mathrm{B}}$ are their respective velocities on reaching the ground, then