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JEE Main2005PhysicsMotion in Two DimensionsActual

A particle is projected from a point O with velocity u at an angle of 60^ with the horizontal. When it is moving in a direction at right angles to its direction at O , its velocity then is given by

Options

  1. Au 3
  2. Bu 2
  3. C2 u 3
  4. Du 3

Correct answer

D. u 3

Step-by-step solution

u 60^ = v 30^ v= 4 3

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