A ball of mass 10 kg moving with a velocity 
along X-axis, hits another ball of mass20kg whichis at rest. After 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 10 m/s. The second piece starts moving at a speed of 20 m/s at an angle θ (degree) with respect to the X-axis.
The configuration of pieces after collision is shown in the figure. The value of 
to the nearest integer is _________.
Text Solution
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(30) JEE Main 2021
From conservation of momentum along x-axis; 
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