Before Collision
After Collision
From conservation of momentum along x axis;
Pi=Pf
10×103=200cosθ
cosθ=23
θ=30∘
A ball of mass 10 kg moving with a velocity 10√3 ms^-1 along X-axis, hits another ball of mass 20 kg which is at rest. After the collision, the first…
JEE Main 2021 — Physics Mechanics
2021integermedium
A ball of mass 10kg moving with a velocity 103ms−1 along X-axis, hits another ball of mass 20kg which is at rest. After the collision, the first ball comes to rest and the second one disintegrates into two equal pieces. One of the pieces starts moving along Y-axis at a speed of 10ms−1. The second piece starts moving at a speed of 20ms−1 at an angle θ (degree) with respect to the X-axis. The configuration of pieces after the collision is shown in the figure. The value of θ to the nearest integer is _________.
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Held on 16 Mar 2021 · Verified 6 Jul 2026.
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