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BITSAT 2020
Exam
BITSAT
Year
2020
Subject
Physics
Chapter
Motion in Two Dimensions

BITSAT 2020 · Physics · Motion in Two Dimensions

A projectile A is thrown at an angle of 30^ ^ to the horizontal...

A projectile A is thrown at an angle of 30∘30^{{}^{\circ}} to the horizontal from point P. At the same time, another projectile B\mathrm{B} is thrown with velocity v2\mathrm{v}_{2} upwards from the point QQ vertically below the highest point. For B\mathrm{B} to collide with A,v2v1\mathrm{A}, \frac{\mathrm{v}_{2}}{\mathrm{v}_{1}} should be A projectile A is thrown at an angle of 30^ ^ to the horizontal from point P. At the same time, another projectile B is

Options

  1. A1
  2. B2
  3. C12\frac{1}{2}
  4. D4

Correct answer

C. 12\frac{1}{2}

Step-by-step solution

This happen when vertical velocity of both are same. ∴v2=v1sin⁡30∘ or v2v1=12\therefore v_{2}=v_{1} \sin 30^{{}^{\circ}} \text{ or } \frac{v_{2}}{v_{1}}=\frac{1}{2}
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