AP EAMCET Engineering 22 Apr 2019 Shift 2 Paper

A particle is executing simple harmonic motion along a straight line PQ. At three points A, B and C on the line PQ. lying on one side of the mean position, the velocities of the particle are 8 ms−1, 7 ms−1 and 4 ms−1 respectively. If AB = BC = 1 m. the velocity of the particle at mean position is