A 100 g block is connected to a horizontal massless spring of force constant `25.6(N)/(m)` As shown in Fig. the block is free to oscillate on a horizontal frictionless surface. The block is displaced 3 cm from the equilibrium position and , at `t=0`, it is released from rest at `x=0` It executes simple harmonic motion with the postive `x-direction indecated in Fig. The position time `(x-t)` graph of motion of the block is as shown in Fig.
Q. When the block is at position A on the graph, its

Options

A. position and velocity both are negative
B. position is positive and velocity is negative
C. position is negative and velocity is positive
D. position and velocity both the positive

Answer

B

Explanation

At position A block is in positive region and slope is negative, so velocity is negative.