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NEET 2006 Physics question

PhysicsMotion in a Straight LineNEET 2006

A particle moves along a straight line OX. At a time t (in seconds) the distance x (in metres) of the particle from O is given by . How long would the particle travel before coming to rest: -

Answer: (4)

Solution

Velocity . The particle comes to rest when . Since the velocity is positive for s, the particle moves in one direction only, so

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Question ID VK-089550