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EasyPhysicsprojectile motion
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A person throws a stone in air at some angle. It is observed that after 2 s it is moving at an angle 30° to the horizontal and after further 2 s, it is travelling horizontally. The magnitude of initial velocity of stone is
A
20√3 m/s
B
20√7 m/s
C
30√2 m/s
D
15√7 m/s
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