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JEE Main 2020 Physics question

PhysicsMotion in a PlaneJEE Main 2020

A particle is moving along the x-axis with its coordinate with time 't' given by . Another particle is moving along the y-axis with its coordinate as a function of time given by . At t = 1s, the speed of the second particle as measured in the frame of the first particle is given as . Then v (in m/s) is .

Answer: 580

Solution

At t = 1 s, = 2 m/s and = −24 m/s, so the relative velocity is (−2, −24) and

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Question ID VK-011856