JEE Main Physics question

PhysicsMotion in a PlaneJEE Main

In a two-dimensional motion of a particle, the particle moves from point (position vector ) to point (position vector ). If the magnitudes of these vectors are and , and the angles they make with the -axis are and respectively, find the magnitude of the displacement vector.

Answer: (B)

Solution

Angle between : . \vecr_2\vecr_1$|^2

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Question ID VK-157938