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Questions  

A projectile A is thrown at an angle 30° to the horizontal from point P. At the same time, another projectile B is thrown with velocity ν2 upwards from the point Q vertically below the highest point A would reach. For B to collide with A, the ratio   v2v1 should be

a
32
b
2
c
12
d
23

detailed solution

Correct option is C

Vertical component of velocity of projectile A should be equal to vertical velocity of projectile B. or   v1sin30°=v2   or v12=v2∴  v2v1=12

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