Fig 2 (NCT).8 gives the ` x-t` plot of a particle executing one dimensional simle harmonic motion. Give the signs of position, velocity and acceleration variables of the particles at ` t= 0.3 s`, ` 1.2 s, - 1. 2 s`,

Explanation

(i) At t=0.3s, x is negative,
velocity is negative
Acceleration is positive
(ii) At t=1.2s, x is positive
Velocity is positive, But acceleration will be negative
(iii) At time t=-1.2s, x is negative
Velocity is positive and acceleration is also positive.